There are many problems with determining the redwood species and their names. The middle name of the redwood species is formed during production, distribution, and use. The name of the mahogany timber species must be given a new name after research, regulation and scientification. These names cannot be subjectively judged. They are only screened in past conventions and names, and they are also recognized by people.
First, a lot of names, very chaotic for the Ming and Qing Dynasties classical furniture materials, in 1962 it was said to refer to red sandalwood, huanghuali, new pear, chicken wing wood, iron wood, ebony and mahogany; others say it means rosewood, rosewood, mahogany, Elm and iron wood. In 1984, it was said that mainly refers to red sandalwood, Indian rosewood, sacred rosewood, Burmese rosewood and African rosewood, Angola rosewood, Vietnamese rosewood; Dalbergia has hematoxylin; red bean tree has small leaf red bean, red bean tree, wood pod red bean, lychee Leaf red beans, green red beans, flower palm wood, Taiwan red beans and other red bean wood. There are also many people who call the rosewood in the genus, the heartwood is light or reddish, and the heartwood is dark red or purple, called red sandalwood or purple pear. In 1986, it was said to refer to Dalbergia sinensis, Broadleaf Dalbergia, Brazilian Dalbergia, Red Sandalwood, Burmese Red Sandalwood, Andaman Red Sandalwood, Indian Red Sandalwood, Cystic Red Sandalwood and African Red Sandalwood. Most people use mahogany, fragrant mahogany, old mahogany, new mahogany, red sandalwood, Venus rosewood, bovine rosewood, rosewood, new pear, huanghuali, purple pear, red rosewood, black rosewood, white rosewood, ebony, More than 20 names such as chicken wing wood, iron power, copper rough, and iron rough.
Commercially, the species of Dalbergia (including a few species of red sandalwood) are commonly referred to as redwood, which is commonly known as mahogany. But for those who have aroma (such as scented rosewood and broad-leaved rosewood), it is called fragrant mahogany. One of the pears originated from Hainan Island. The local people used to call the fragrant rosewood to be called pear or rosewood, which is commonly used in Guangdong. Some redwoods are called pears, and some have sour taste when sawing. . Guangdong is often referred to as rosewood and rosewood. This is a historical fact. However, at the meeting of the Redwood Standards Exposure Draft, more than 20 participants agreed that although in history, Guangdong rarely used rosewood, but it has been widely spread in Hongmu. In the case of a mahogany, it is still appropriate.
It is not feasible to have a collective name in business activities. It is more appropriate to use the term "redwood" before replacing it with a more appropriate name. Some mahogany owners and manufacturers are concerned that red sandalwood, rosewood, red rosewood, black rosewood and ebony may be reduced under the collective name of redwood, especially the value of red sandalwood. The answer is yes, and will never lower the value of wood such as red sandalwood. From the surface, although the rosewood, etc. is used in the mahogany, it is not called mahogany, it is still called red sandalwood. In this regard, Article 7 of the "Redwood" standard clearly stipulates: "In the business activities, the category to which the wood belongs, the Latin name of the tree species, the generic name and the place of origin must be indicated."
Second, there are the same kind of synonyms or synonyms of the same phenomenon. The middle name circulated in the past is to identify wood by experience alone. Although there is a certain degree of correctness, the understanding of wood is not enough, and it is inevitable that the same kind of synonyms or synonyms of the same species will occur.
As early as 1942, G. Ecke said in the wood section of the joinery furniture of the Chinese Rosewood Furniture Picture: "Under the same business name, it seems that there are many different kinds of wood again." Dr. H. Hallori was identified as Cassia siamea Lam; (author's note: the Latin name of the iron wood is Mesua ferrea L., and the name of the iron knife should be Cassia siamea Lam) "but for later forms The slightly different wood that is still available on the market has been identified by Chinese experts as the red bean tree (Ormosia hosiei) in central and western China. At the same time, he believes that "the coffin is the chicken wing wood." Some people also refer to the sandalwood sandalwood in the sandalwood rosewood, and the gums in the heartwood are called Venus rosewood. In fact, they are all the same kind of wood.
Third, no correct Latin name No matter what species of wood the wood name must have the correct Latin name (or scientific name, scientific name), and the premise of wood anatomy. The Latin name of animals and plants is defined by the international nomenclature. The Latin name uses the same Latin text, so it is recognized by the world as the scientific name of the world; and the description and record of the structural features of wood is the only basis for identifying the wood of this tree species. Conversely, wood names that are not based on Latin names and wood structural features are passive water or castles in the air.
Limited to plant taxonomy, especially the level of wood anatomy, the Latin name of the past lack of trees is understandable. According to Tian Jiaqing, foreign scholars also planned to do this research work. Finally, due to the difficulty in drawing from the classical furniture of the Ming and Qing Dynasties, the expenses were too large, especially the workload was huge, and finally ended in failure.
4. Communication with classical furniture scholars and experts Research classical scholars have scholars and experts. Although the research on the modeling process of furniture is very deep and the accomplishment is very high, the name of the furniture material is still used in the past. Although it is the same tree as the name in the "Redwood" national standard, it is a bit out of place.
The mahogany culture includes not only mahogany furniture, ornaments, incense, etc., but also woodcarving artifacts, such as gardens, temples, temples, temples, wall hangings, cabinets, tables and chairs.
General Type Freeze Dryer
This model lyophilizer is widely used in medicine, pharmacy, biology research, chemical industry and food production ,etc. A long term preservation is much easier after the freeze drying process. The general type freeze dryer can be restored to the original state and maintain their chemical and biological characteristics after being watered. Freezing and drying process are finished in the same place (patented product).
1. The shelves are made with unique patented technology, high pressure resistance, high flatness, and good temperature uniformity.
2. The cooling speed can be controlled throught The freeze-drying curve optimization control technology in the pre-frozen phase, and at the same time, the sample heating speed and the current vacuum value also can be controlled in the sublimation and analytical drying stages.
3. The patented gas diversion design and control technology ,strong ice collecting capacity and high drying efficiency.
4. Highly efficient mixed refrigerant medium, lower freezing point and higher boiling point, high heat exchange efficiency.
5. Vacuum adjustment during drying operation to avoid foaming and blowing of special materials and improve drying efficiency.
6. Industrial-grade embedded touch screen + dedicated SH-HPSC-IV modular controller, stable and reliable system, high control accuracy.
7. The professionally designed LYO-CONTROL control system can save multiple sets of process . At the same time, the process can be adjusted in real time during the drying process to improve the process optimization rate.
8. Flexible manual + automatic control mode, the manual for groping process, and the automatic for batch production.
9. The powerful LYO-MEGA host computer control system can record and save the operating data, curves and alarm records for ten years to improve the traceability of products; at the same time, it is convenient for observation, operation and fault diagnosis.
10. User grades and passwords can be set, and operations can be decentralized
11. The non-stardarded can be customized as requested.
Production Type Freeze Dryer,Industiral Freeze Dryer,Large Scale Freeze Dryer,High Quality Freeze Dryer,Goood Quality Freeze Dryer
Zhengzhou mingyi instrument equipment co.,ltd , http://www.mingyint.com