这就需要吊桶在下到几百米下的水底自动把料卸掉，但现在矿井常用的挂钩式吊桶和座钩式吊桶已经不能满足这个需要了。
However, the present hook bucket and seat hook bucket that used in the mine wall has been unable to meet this requirement.
他们看见哈根发出嘘声赶桑尼穿过法国式门进了堂的办公室，然后向亚美利哥把手指弯成钩形。
They saw Hagen shoo Sonny through the French door into the Don's office and then crook a finger at Amerigo Bonasera.
目的探讨单侧钩槽式外固定器（UHSEF）在治疗骨折中的疗效。
Objective To evaluate the effect of unilateral hooked sulcated external fixator(UHSEF) in fractures.
应用推荐