有机化学家接受了平均平面环己烷的理论.Organic chemists accepted the theory of the average planar cyclohexane ring.己烷是一种石油碳氢化合物.The petroleum hydrocarbon is called hexane.利用气液双循环的高压气液平衡装置,测定了二氧化碳 - 环己烷在313.Gas - liquid equilibrium data for ...
Preparation of salicylic hydrazide . Controlling material mole ratio and the product recrystallization is the key.水杨 酰肼的制备控制原料的摩尔比、产物的重结晶是关键....the degradation of salicylic acid in plants.植物中水杨酸的降解Topical ointments and c...
说得老套一点，其内容翔实。To use a well-worn cliche, it is packed with information.心理转折使原本老套的故事情节变得生动有趣。Psychological twists perk up an otherwise predictable story line.采用的方法很老套，没什么效益。The methods employed are old-fashioned and unecon...
Chambers' voice droned, maddening as an insect around his head.钱伯斯一直在他耳边嗡嗡地说个不停，他都快疯了。Chambers waved his hand. "Belt up!" he snapped.钱伯斯手一挥，喝道：“闭嘴！”These palatial chambers, how marvellously they came to her.这些宫殿般的房间...