Zhengzhou Beicun Valve Co., Ltd.
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The readability of a readability balance is the smallest difference between the two weighing values ​​that can be read on the display. When using a digital display, this is the smallest numerical increment, also known as the "division value."
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Through the use of container seedlings, ABT rooting powder, water retaining agent, mulching, immersing and other afforestation techniques, the survival rate of afforestation and seedling growth can be significantly increased. The survival rate of afforestation is generally more than 90%, a.......
1. In winter, the temperature and water temperature are low, fish activity is weak,.......
Due to the differences in pasture varieties, they must be processed before sowing. Such as hard treatment and rhizobia inoculation, is conducive to the germination of seeds to ensure the quality of sowing. Many leguminous seed coats have a layer of closely packed long columnar Martensitic .......
Release date: 2010-09-25
Recently, researchers at the Japan Institute of Materials Research have developed a new type of electron source, w.......
In the natural state, the double-natured rate of cattle is 0.29% to 3.5%. Therefore, in order to increase the production of cows, increase the efficiency of cow breeding, and reduce the cost of breeding, artificial induced twins are used to make cows double. fetal. At present, the main way.......
3.1 Solvent Solvate An organic substance that can dissolve lipids sufficiently and rapidly in any proportion. (No. 6 solvent oil, acetone, etc.)
3.2 Solvent leaching Solvent extraction is also known as "extraction&q.......
Marine acoustic technology
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