It was found that the broach was locally overheated due to band segregation of carbide, and under-tempered. These factors caused fracture of broach as a result of high internal stress.
严重的碳化物带状偏析，使拉刀产生局部淬火过热和回火不足，造成内应力急剧增高，最终导致拉刀断裂。
If your head is overheated, there's a good chance you'll yawn soon, according to a new study that found the primary purpose of yawning is to control brain temperature.
如果你的头脑过热，那么很有可能很快就打个呵欠。根据一项新的研究表明，打呵欠的主要原因就是控制大脑温度。
If your head is overheated, there's a good chance you'll yawn soon, according to a new study that found the primary purpose of yawning is to control brain temperature.
如果你的头脑过热，那么很有可能很快就打个呵欠。根据一项新的研究表明，打呵欠的主要原因就是控制大脑温度。
应用推荐