Cyclopentanone ethylene ketal was synthesized with I _ 2 as catalyst.以单质碘为催化剂合成了环戊酮乙二缩酮.The blended chips containing 10 % ~65 % of n - Eicosane were fabricated with n - Eicosane, polyethylene ( PE ) and ethylene - propyl...
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...
Low sales for turbot during the past months have led to a price drop.大菱前几个月交易量偏低,导致价格下降.Moreover, substitute products are still showing lower prices when compared with turbot.而且, 一些可替代产品在与大菱的竞争中又降低了价格.The adenosine triph...
We had gone from good humor to bellicosity back to joviality in five hours.在五个小时中,双方一会儿从谈笑风生变成剑拔弩张,一会儿又恢复谈笑风生.There was in him the heartiness and intolerant joviality of the prosperous farmer.在他身上有种生意昌隆的农场主常常表现出的春风得意欢天喜地...
The auditor has questioned the legality of the contracts.审计员质疑这些合同是否合法。The law, your contracts, your public protect you, do they? How?法律、合约和公众会保护你。真的会吗？怎么保护？The company has 90 staff, almost all on short-term contracts.公司...