Installations with suction lift require a good quality foot valve to avoid loss of prime - remove in-built check valve.
进水口的安装需要使用一个品质优良的底阀，以避免进水口压力损失-拆除内置式止回阀。
The cavitation on culvert valve of high lift lock is a knotty, wide - spread problem to be solved anxiously.
高水头船闸输水阀门空化是一项普遍存在、急待解决的课题。
A new mathematical method of valve theoretic movement rules according to the CAM lift data was introduced.
介绍了一种根据凸轮升程数据求取气门理论运动规律的计算方法。
The magnitude of each velocity component and tangential velocity curve changed a lot and the changes were even more obvious along as increasing of the valve lift.
各速度的大小和切向速度分布曲线发生较大变化，并随升程的增大而更加明显；
The proportional valve can be opened sufficiently slowly to provide a smooth acceleration of the lift up to its maximum speed.
比例阀能够足够慢地打开以提供一个平滑加速度使电梯达到最大速度。
The needle valve can be closed through the rotation of a needle stem, and the oil cleaning device can also be driven to lift to clean out carbon deposit in the nozzle.
通过针阀杆的旋转即可以关闭针阀又可以带动清油器升降，清除喷嘴中的积碳。
The safety valve can make the lifting fluid-pressure drive circuit of a fork lift truck or a crane obtain not only high efficiency ascending speed, but also reliable and safe descending speed.
该安全阀使叉车或起重机的起升液压驱动回路既有高效率的上升速度，又有可靠的安全下降速度。
This paper gives a brief introduction on the technology of variable valve timing (VVT) and variable-lift, and brings forward a new CAM structure which is simple and practical.
本文简要介绍了可变气门正时(VVT)及可变升程技术，提出了一种简单而实用的新型凸轮结构。
This invention provides a set of self-powered mechanical device, an auto-regulating movable weir-plate, a back-flushing buffer and lift-pull valve.
本发明提供一套自力式机械装置、自动调节活动堰板、反冲阻流器、提拉阀。
This invention provides a set of self-powered mechanical device, an auto-regulating movable weir-plate, a back-flushing buffer and lift-pull valve.
本发明提供一套自力式机械装置、自动调节活动堰板、反冲阻流器、提拉阀。
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