它的喷嘴抹了某种润滑油。Its nozzle was smeared with some kind of lubricant.将火柴放在煤气喷嘴上点燃煤气.Put a match to the jet to light the gas.她掉转喷嘴,让水花集中喷入小河.She turned the nozzle and the spray concentrated down to a stream....
本文叙述了陶瓷泥浆成形用五水偏硅酸钠制造工艺和影响因素,简要介绍了其在陶瓷行业中的应用.This paper describes the preparation technology and influential factors to Metasilicate pentahydrate for ceramic slip casting.在五水四氯化锡存在下,由氯乙酸和正丁醇合成氯乙酸正丁酯.Synthesis of n - butyl...
You can buy a formulation containing royal jelly, pollen and vitamin C.可以买一种含蜂王浆、花粉和维生素C的配方产品。Howe carefully cultivated Daniel C. Roper, the Assistant Postmaster General.豪谨慎地和邮政副部长丹尼尔·C.罗珀拉近关系。He was put on a high dosage...