Both the free hydroxyl groups readily undergo esterification.两个自由羟基,都容易酯化.The rate of hydrolysis is for the most part significantly lower than the esterification rate.多数情况下水解速度较酯化速度低得多.The esterification of xylitol and o...
He was already buffing the car's hubs.他已经在擦汽车轮毂了。I greased front and rear hubs and adjusted the brakes.我在前后轮毂上都抹了润滑油，还调校了刹车。Shafts and hubs are usually fastened together by means of keys.轴和轮毂通常用键固定在一起....
The Newton Hotel is halfway up a steep hill.丽东酒店位于陡峭的半山腰上。There is a 2 mile coastal walk from Craster to Newton.从克拉斯特到牛顿有一条两英里的海滨小径。Newton's law of gravity牛顿万有引力定律...
They've been at war for the last fifteen years.最近15年来他们一直在打仗。They are at war with each other.他们互相争吵.Whenever the Italian city - states were at war with each other, Hawkwood used to hire his soldiers to princes who w...