查询词典 flutter valve

Second, Duckbill valve Water Pump Control Valves pros and cons: 1 advantages: Duckbill valve, low cost, such as the use of appropriate rubber material than metal valve service life, easy installation, installation of flexible and diversified ways to repair.

二、鸭嘴阀的优缺点： 1、优点：鸭嘴阀成本低，如采用合适橡胶原料使用寿命超过金属止回阀，安装方便，安装方式灵活多样，可修补。

It researches the regularity of A(geometrical cross section area of valve),Sc(obtained by the definition of effective cross section area of valve),Sa and Sv(obtained by sonic velocity air exhaust method) to the change of the opening of valve,x...

研究了A，Sc(根据试验由有效截面积S的定义算出)，Sa及 Sv随阀开度x变化而变的规律，通过对比探讨了求解以上各种有效截面积方法的可靠性及相互关系等。

The principal of buffer is described as follows.At impulsing down,the piston moves down and vacates the annular space.The pressure in respiratory cavity decreases to a certain level and the traveling valve opens.At that time,the liquids enter into traveling valve and cavity and the plunger is impulsed upward to carry out the gentle transient at the sudden change.When the upward impulsing begins,the respiratory cavity is subjected to pressure and the traveling valve closes.During the gradual pressure rising,the liquids in respiratory cavity effuse from the upper ventage and the sudden change of force-summing direction of plunger is relieved relying on the resistance of ventage.

其原理大致是：下冲程时，活塞向下运动，让出环形空间的体积，呼吸腔内压力下降，下降到一定水平后，游动阀打开，此时，游动阀和小孔同时进液，使柱塞在从上死点处突然改变方向向上运动时得到缓冲，实现了柔和过渡；当上冲程开始时，呼吸腔受压，游动阀关闭，在压力逐渐上升的过程中，呼吸腔内的液体从上部的小孔流出，并依靠小孔的阻力使柱塞受力突然换向得到缓冲。

Grinding valve hole (1) research with Mainly to restore valve grinding hole geometry, eliminating valve hole taper and ellipticity.

研磨阀孔(1)研具研磨主要是恢复阀孔的几何尺寸，消除阀孔的锥度和椭圆度。

"That is to say, each cylinder has two valve s, an intake valve and exhaust valve ."

也就是说，每个气缸有两个气门，即进气门和排气门。

As a replacement of valve number 1 with Red Valve's Type A and pneumatic fail-safe system 700, valve number 3 has accomplished an improvement in the fluid dynamics of the system.

作为1号阀的替代品，美国红阀公司A型夹管阀和无故障气动系统700，也就是左图中的3号阀，极大地改善了流体介质的流动性。

Main Products: solenoid valve, pneumatic valve, flashboard valve, standard parts, such as vacuum and vacuum system design and assembly debugging.

公司主要产品：电磁阀、气动阀、插板阀、真空标准件等以及真空系统的设计与组装调试。

Design Bellows valve structure of the most common form of bellows globe valve and gate valve.

设计要求波纹管阀门最常用的结构形式为波纹管截止阀和闸阀。

3 Ball Compared to gate valve, globe valve, ball valve is new, increasingly widely used valves.

1.3 球阀相比闸阀、截止阀，球阀是一种新型的、逐渐被广泛采用的阀门。

It can replace the valve, globe valve and globe valve.

它将可取代闸阀、截止阀及球形阀。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。