Diglycol diacetate had been obtained with sulfuric acid or toluene - p - sulfonic acid as catalyst in lab.研究了在实验室条件下,以硫酸、对 甲苯 磺酸为催化剂合成二甘醇二醋酸酯的方法.The synthetic principle and the process method diglycol dioleate were discu...
They tinkered with the engine…他们修了修发动机。They tinkered with the engine.他们修了修发动机。The Chemists have tinkered with heat and metal catalysts to refine their materials.化学家摆弄热和金属催化剂来提炼....
She turned around and began to retrace her steps towards the house.她转身沿原路向那栋房子走去。You might find your ticket if you retrace your steps back to the car.如果原路折回到车子那里,就有可能寻回你的票.You must retrace your steps [ way ] .你必须 折回 原来 走...
They had orders to snuff out the enemy guards.他们接到了杀掉敌卫兵的命令.You've got the power. You can do anything you want. You can snuff him out or not.你已经大权在握，可以为所欲为了。你可以灭了他，也可以不这么做。You'll snuff out one day if you'r...
Her short spiky hair is damp with sweat.她的刺头被汗打湿了。...tall, spiky evergreen trees.高高的尖顶常绿树With his spiky hair shirt , Hamilton could be a rugged glaciologist straight from central casting.汉密尔顿头发直立 、 不修边幅,就是那种典型的粗壮的冰川学家.Yo...