... ball-and-socket joint 球窝节 ball-and-spring valve弹簧球阀 ball-passing test 通球试验 ...
双语例句
1
The pump valve has a structure of semi-spheric plunger with guide rod, and its seat and ball are aligned by means of a spring, and it is opened and closed in time.
泵阀件采用带导向杆的半球形柱塞结构，弹簧制动，精确控制阀球与阀座对中，启闭动作及时。
2
The vent valve comprises an air vent screw, a springand a valveball which leans against the channel under the acting force of the spring.
所述排气阀包括一排气螺钉、 一弹簧、一钢球，阀球在弹簧作用力下抵靠通道上。
3
As the spring is arranged below the ballvalve, the ball valve has self-tightness, thereby ensuring the tightness of the ball valve to be more reliable, and improving the feasibility of the operation.