To join the workpiece should be oil removal of nitrate.
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2. 香椿叶中含有亚硝盐，用沸水烫后，可降低其含量。
The chinese toon leaf contains nitrate, which can be decreased by blanching it the boiling water.
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3. 在高温盐、佩盐、硝盐中作业时，应分别使用专用工具夹。
The operation in high temperature and salt, salt, Pelosi in nitrate, respectively using special tool clamp.
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4. 因此，溶解渗透对钙芒硝盐岩的力学特性有着极大的影响。
So, it can be concluded that solution pervasion has great effect on mechanical characteristics of calcium thenardite rock salt .
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5. 为解决困难，井冈山军民把老墙土刮下来泡在水里，然后熬成硝盐。
To solve this problem soldiers and civilians of Mount Jinggang scraped off the earth from some old walls and soaked it in water and then decocted (boiled down) it into earth salt.
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6. 溶解后孔隙率的研究对难溶性钙芒硝盐岩水溶开采机理的研究有重要的意义。
This is important to study on solution mining mechanism of the difficult solubility glauberite.
At the beginning of 2005, Longgui Saltpeter mine in Guangdong Province has succeeded in applying new technology in this kind of salt mines with numerous economic and social effects achieved.
Electric heating pipe can be widely used in heating water, oil, air, nitrate solution, acid solution, alkali solution and low melting point metal (aluminum, zinc, tin, Babbitt).
Electric heating pipe can be widely used in heating water, oil, air, nitrate solution, acid solution, alkali solution and low melting point metal (aluminum, zinc, tin, Babbitt).
