这些峰分别相当于乙基和丙基的侧链开裂.These peaks correspond to side - chain cleavage of the ethyl and propyl groups respectively.'聚'.''氨脂一种氨基甲酸中除''.'乙基'.''酯以外的酯.Any of several esters, othe...
They are regularly sent booklets about personal safety, but they barely read them as they have so much paperwork to deal with.他们经常会收到关于人身安全问题的宣传册，但因为大量文案工作缠身，他们几乎无暇阅读。...an effective method that will not overload staff w...
( Permitting a call while other data is being accessed is a preferable alternative. )通话结束后,要能够返回到以前的模式 ( 在访问其他数据时,仍然可以允许电话进来则是更好的一种可选方案 ).Antimonial lead is preferable to chemical lead because of its greater corrosion re...
A shaft on the piston forms the armature of a coil.活塞轴作线圈的衔铁.N is armature of soft iron.N是软铁的衔铁.The iron with the wound coils on it is called an armature.缠绕着线圈的铁心叫做电枢....