Ethylene and trans - dichloroethylene are both inactive in the infra - red in this region.乙烯和反式二氯乙烯在红外光谱的这个区域都无活性.Plasma - polymerization of ethylene gives films of complex, uncertain structure.乙烯的等离子聚合得到复杂的, 无固定结构的薄膜.In...
“坦白说我觉得这相当可怕。”——“是有点吓人，”马克表示同意。"Frankly I found it rather frightening." — "A little startling," Mark agreed.这和我上次买的相比贵得吓人。This is fearfully expensive compared with the last one I bought.她的声音大得吓人。“放下椅子，”她粗声说道。Her voice wa...
Russian unit of weight equivalent to about 16.4 kilograms ( 36.1 pounds ) avoirdupois.普特俄国重量单位,相当于约16.4公斤 ( 即36. 1磅 )The increase of carbon equivalent is primary reason for graphite floatation.碳当量高是引起石墨漂浮的主要原因.It is anti...
This substance has now been cloned by molecular biologists.该物质现在已被分子生物学家克隆。Syria will attend only if the negotiations deal with issues of substance.只有在谈判涉及重大问题时叙利亚才会参加。There is no substance in any of these allegations.这些...