The development of a high effective benzol - free paint remover was described.根据“相似相溶原理”选择合适的有机溶剂作为脱漆剂的主要组成.Annual sales: steel, Crude Benzol, Coke, tar, ammonium sulfate, and so on.常年销售: 钢材, 粗苯, 焦碳, 焦油, 硫酸铵等.The transfo...
The optimal systems differ according to the criterion chosen.按照所用准则之不同,最佳化系统便不同.The optimal conditions for the anaerobic digestion are the following.厌气消化的最佳条件如下.It is designed only to maintain minimum standards, not to a...
These men were never told how they'dbeen put in harm's way.从来没人告诉这些人他们是如何被置于险境的。All dogs are capable of doing harm to human beings.只要是狗就可能会咬人。Workers scrambled to carry priceless objects out of harm's way....