Valve support. Valves must be adequately supported with pipe hangers etc. to prevent additional loading on the valve body.

阀座阀门必须有足够的吊管架做支撑，从而防止给阀体增加额外的负载。

Objective To evaluate therapeutic effect of external valve support(EVS) implantation in the treatment of primary deep venous insufficiency(PDVI).

目的评估静脉瓣膜外支撑环（EVS）植入术治疗原发性下肢深静脉瓣膜功能不全的疗效和应用价值。

Considering damping and complicated boundary conditions for the valve support movement, the dynamic equation of the valve vibration of engine is found.

建立发动机气门振动的运动微分方程，该模型杆端作支承运动，考虑阻尼和较复杂的边界条件。

Objective: To evaluate the therapeutic effect of external valve support (EVS) implantation in the treatment of primary deep venous insufficiency (PDVI).

目的：评估静脉瓣膜外支撑环(EVS)植入术治疗原发性下肢深静脉瓣膜功能不全的疗效和应用价值。

Valve and strainers must be supported with conventional piping system support devices.

阀门和过滤器必须采用常规的管道系统支撑装置加以支撑。