The phenyl ofp n propylbenzoic acid could be reduced by sodium alkoxide.醇钠可以还原对丙基苯甲酸中的苯环.Poly ( L - lactide ) ( PLLA ) was synthesized by ring - opening polymerization of L - lactide using cyclic tin alkoxide compound as...
The water is frothing at his feet.水在他的脚下泛起泡沫.The horse was frothing at the mouth after its fast run.马飞奔过后嘴边满是白沫.He was so angry he was almost frothing at the mouth.他气得差点儿口吐白沫....
由于不含铅, 使润滑条件更为干净,符合环保要求.Because of without lead, the bearing has clean lubricating condition and accord with environmental requirement.产品主要应用于中 、 高压齿轮油泵 、 柱塞泵, 叶片泵等.由于不含铅,使润滑条件更为干净,符合环保要求.The product is applied to medium...
Trams in London have been supplanted by buses.伦敦的电车已经由公共汽车取代了.The trams carried an average of 279 200 boardings daily in 1997.年内,电车载客量平均每日279200人次.They replaced trams by buses.他们用公共汽车代替了电车.He economized by using trams in...
LFG tool has been removed.寻求组队工具被去除.It has been found that LFG a potentially danger for the buildings near the landfill site.测试结果表明,填埋气体的横向迁移现象明显,对周围建筑物安全具有潜在的威胁....
But Emmons observed that at flashover, the hot smoky layer instantly drops down.但埃蒙斯观察到发生闪燃时, 热烟层瞬即下落.Before flashover occurs, a person in a burning room may crawl to safety along the floor.闪燃发生前, 着火房间里的人可沿着地板爬行到安全地带.Pol...