本文介绍了用重氮转移法合成具有较大空间位阻的重氮乙酸二环己基甲酯、L- 薄荷酯和叔丁酯。
Synthesis of sterically hindered dicyclohexylmethyl, L menthyl and tert butyl diazoacetate by diazo transfer was described on this paper.
我们走到重丁村时，天终于蒙蒙亮了。
研究了以阴离子型丁苯胶乳、重交沥青、乳化剂和稳定剂制备阳离子型改性乳化沥青的方法。
The way of preparing cationic emulsion asphalt from SBS, heavy asphalt, emulsifiers and stabilizers was studied.
研究了以阴离子型丁苯胶乳、重交沥青、乳化剂和稳定剂制备阳离子型改性乳化沥青的方法。
The way of preparing cationic emulsion asphalt from SBS, heavy asphalt, emulsifiers and stabilizers was studied.
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