Composite pyridine quaternary ammonium salt

The composite tilt is an ancient astronomical instrument in our country, and its main purpose is very important.
The composite tilt is used in the field of astronomical observation, and the main purpose is to measure the sky. Ancient astronomers used the composite tilt to peek at the trajectory of the sun, moon and stars. When observing the sun, key data such as the position and altitude angle of the sun can be accurately measured. Through detailed analysis of these data, we can gain insight into the changing laws of the sun in different seasons, such as the time transition between two minutes and two minutes, which can be revealed by the observation of the composite tilt. This is of great significance in guiding agricultural production. Farmers know when to sow seeds and when to harvest, which has a profound impact on the continuation and development of farming civilization.
Observing a solar eclipse is also an important function of the composite tilt. When a solar eclipse occurs, the composite tilt can clearly show the whole process of the solar eclipse. It allows observers to clarify the specific conditions of the eclipse, such as the eclipse phase and eclipse division. In ancient times, solar eclipses were often regarded as a warning from heaven. The accurate observation results provided by the composite tilt enable people to have a more scientific understanding of the natural phenomenon of solar eclipses and dispel many superstitions and misunderstandings.
In addition, the composite tilt is also very effective in astrological observation. With the help of its delicate structure, the orientation and brightness of stars can be accurately determined. Although ancient astrology has many superstitious elements, it also has certain scientific value in the observation records of astrology. The composite tilt instrument helps astronomers build star maps and preserve precious data for future generations to study the layout of the ancient starry sky and the evolution of celestial bodies. It is like a solid cornerstone in the development of ancient astronomy, promoting people's continuous deepening of understanding of the universe.

The composite horn of the quaternary copper urn is quite remarkable in its sexual abilities. This vessel combines several characteristics and is unique.
First of all, its material is excellent. The copper used is tough and malleable in texture, and it can only be cast by the skilled workmanship of the craftsman. The excellent quality of copper makes the urn resist erosion and preserve relatively well over the years. This is its primary characteristic.
Furthermore, its shape design is exquisite. The shape of the composite horn is not only beautiful, but also contains profound meaning. The state of the horn, whether high-spirited or curved, gives the urn a unique shape, which is both solemn and majestic, and has a smart beauty. Its shape may be related to religious, sacrificial and other activities at that time, carrying specific cultural implications. And the size and proportion of the urn have been carefully considered to suit practical purposes, such as storage and ritual utensils.
In addition, the craftsmanship is superb. During the casting process, it is necessary to precisely control the details such as the heat and the flow of copper liquid to achieve such a masterpiece. The body of the urn may have fine patterns, or it is outlined by lines, or it is engraved with patterns, all of which reflect the exquisite craftsmanship of the time, and also reflect the aesthetic orientation and technical level of the society at that time.
Furthermore, its functions are diverse. At that time, it could not only be used as a container for daily storage of grains, drinks, etc., to ensure the storage of living materials; it could also be used as a ceremonial vessel on major occasions such as sacrifices and celebrations, demonstrating the solemnity of ceremonies, carrying people's reverence for the gods and prayers for a better life.
The composite horn and its quartered copper urn are unique among ancient utensils with exquisite materials, exquisite shapes, superb craftsmanship, and diverse functions. They carry rich historical and cultural information, and are precious objects for future generations to explore the social features and cultural traditions of the past.

The production process of the copper urn in the composite tile season is quite exquisite.
First of all, the material is selected. The copper urn needs to be made of high-quality refined copper, which is pure and tough, so that it can go through various subsequent processes without damage. The composite tile needs to be selected clay, and the soil should be delicate and sticky, so that it can be shaped and tight after firing.
When making a copper urn, the refined copper is first melted in a special furnace. The furnace is on fire, and the copper is melted into gold liquid, which is dazzling. The copper liquid is poured into the carefully made urn mold with a special utensil. When tilting, it needs to be smooth and uniform, so that the copper liquid is filled all over the mold without leaving any trace. When the copper liquid coagulates a little, take out the urn mold, carve it carefully, trim off the rough edge, and engrave it with patterns, either for auspicious beasts or auspicious clouds, all of which are lifelike and mean auspicious.
The composite tile is made of selected clay, kneaded with water, until it is paste-like, soft and tough. Plastic the tile blank by hand or mold. The shape of the tile blank should be regular and consistent, and the size should be fit. Shape it into a cool place at the back to air dry, wait for it to be semi-dry, and then enter the kiln for firing. The temperature of the kiln fire is very important, and it needs to be carefully adjusted according to the change of season and heat. At first, dry it slowly over a low fire, so that the moisture of the tile billet gradually loses, and then the fire burns violently, making the When firing, the kiln worker keeps his eyes on the fire, watches the color of the fire, listens to the sound of the kiln, and controls the heat with years of experience. After the tiles are fired, they are cooled out of the kiln, and the composite tiles are made.
The copper urn made of
is solemn and simple, and can be placed in the hall, which can be elegant; the composite tiles cover the roof, shielding the wind and rain, and are durable. The production techniques of both of these are the blood and wisdom of craftsmen, inheriting the essence of ancient skills.

There are various things to pay attention to during the use of the composite croissant wok and retort. The details are as follows:
First, you must check it carefully before use. See if it is damaged or cracked. The wok and retort are important cooking utensils. If it is damaged, it is easy to cause uneven cooking, difficult to cook the ingredients, and may leak soup and stain the stove. For example, "Tiangong Kaiwu" says that "when all utensils are used at the beginning, they must be scrutinized carefully." Therefore, careful inspection before use can avoid many inconveniences during cooking.
Second, it must be properly cleaned. After use, remove the residual food and dirt from it. If it is allowed to remain, it is easy to produce peculiar smell and cause corrosion of the retort body. It is advisable to wash it with warm water and dry it with a cloth. This is the way to keep it clean and prolong its life. Gu Yun "If the utensils are often clean, they will be used for a long time". I sincerely do not deceive you.
Third, the control of the heat must be accurate. The material of the composite horn is different from that of the seasonal wok, and it has different sensitivity to the heat. Simmer slowly over low heat to make the ingredients tasty; the fire is urgent, and it is suitable for quick frying. If the heat is improper, the lighter ingredients will lose their taste, and the heavier ones will be damaged. As "Tiangong Kaiwu" said, the way of cooking, the heat is the most important.
Fourth, the placement is also exquisite. It should be placed in a dry and stable place, avoiding a humid place to prevent it from rusting; avoid an unstable position to prevent it from being damaged by dumping. The so-called "Install the utensils in a stable place to avoid moisture to prevent rust" is a common method for guardians.
Fifth, the frequency of use should be appropriate. Although it is sturdy and durable, excessive and frequent use will also accelerate wear and tear. Reasonable arrangement of use can ensure its long-term use.
All of these are things that should be paid attention to when using composite horns and seasonal wok. If you follow them, the wok will last for a long time and the cooking will be smooth.

Compared with other similar products, the advantages of composite Yangqi Sui
are as follows:
First, the material is excellent. The bronze used in composite Yangqi Sui
is carefully selected and repeatedly tempered. This bronze is tough in texture, and has good ductility and corrosion resistance. As a result, the body is sturdy and durable, and it is difficult to damage its shape after years of vicissitudes. And other products may be prone to rust and deformation in long-term use or environmental changes due to poor materials.
Second, the craftsmanship is exquisite. When casting this piece, the craftsmen use a unique casting process to divide and combine casting, and carefully control every link. The decorative carvings are delicate and subtle, and the lines are smooth and natural. Whether it is Taotie patterns, cloud and thunder patterns, etc., they are all lifelike, showing the beauty of solemnity and mystery. In contrast, other similar products may have rough craftsmanship, and the decorative patterns are blurred, making it difficult to compound the subtlety of Yangqi Sui.
Third, the sound effect is excellent. Composite Yangqi Sui is well versed in acoustic principles in design and production. Its shape, thickness and weight have been accurately calculated and debugged. When tapping, the sound is pure and melodious, and the lingering sound is curling, which can play a beautiful rhythm. Other products may have poor sound effects due to mistakes in design and production, or are dull and hoarse, or sharp and harsh, making it difficult to achieve this state.
Fourth, profound cultural heritage. Compound Yangqi Sui bears the cultural connotation of a specific historical period. From its shape and decoration, we can see the religious beliefs, aesthetic concepts and social features of that time. Every detail is a witness to history and a cultural inheritance. In contrast, other products may lack such profound cultural accumulation and are only ordinary utensils, which are difficult to compare with Fuhe Yangqi Sui.