Professors sand teachers usually lecture from an outline they've prepared ahead of time.
教授和老师讲课通常从一个他们已经提前准备的提纲开始。
2
At last, experiments of suspending sand with thickener were done and excellent sand slurry for mine fire control was prepared.
最后，用悬砂稠化剂进行了悬浮山砂的实验，制备出具有优良防灭火性能的稠化砂浆。
3
The cast ingots prepared using sand mould and metal mould were analyzed to investigate the effect of cooling rates on morphologies and characters of M2C eutectic carbides in M2 high speed steel.