A firefighter was overcome by fumes at a blaze in a plastics factory.一名消防队员在一家塑料厂的火灾中被烟熏倒了.In the artical, fire retarding methods for plastics are simply introduced.本文简要介绍了塑料的阻燃方法.The color deviation is a very important ...
Chemical constantly circulate or recycle in the system.化学物质在系统中不断循环或回流.The recycle ratio anodynon is 84 % above the yield level of the same industry in domestic.氯乙烷收率可达84%以上,远远高于国内同行业的收率水平.Sulfur recycle catalyst activen...