当关闭通道时，用阀杆的楔形头使球体涨开与阀座压紧达到密封。
When the closed channel, the wedge-shaped head with a stem to open up the ball and pressed to seal the valve seat.
木头把（柄）应该完美无损，要做楔形头牢固地镶在工具上，不能用带子捆绑裂缝之类的伤痕。
Wood handles should quite possibly be sound and securely wedged or fastened to the tools. Tape should not supply to cover defects such as crair conditionersks.
后来，我开始接受药物治疗，睡在楔形物上抬高我的头和肩膀，感觉好一些了。
Later, when I began to take medication and sleep on a wedge to elevate my head and shoulders, it got better.
石制品中有典型的楔形、船底形石核；工具有长身圆头刮削器、雕刻器和锛形器等。
Among them boat or cuneiformed cores and stone tools such as long scrapers with round edges, engravers and adze-shaped blades are found largely.
同时，卡块的楔形设计能起到自锁的作用，使动静触头能够稳定接触。
Meanwhile, the wedge-shaped design of the fixture block can play the role of self-locking, and thus causing the moving and static contacts to be steadily contacted.
同时，卡块的楔形设计能起到自锁的作用，使动静触头能够稳定接触。
Meanwhile, the wedge-shaped design of the fixture block can play the role of self-locking, and thus causing the moving and static contacts to be steadily contacted.
应用推荐