According to flow in a different, balanced spool valve the pressure can be pre-pressure, can also be a back pressure valve.
根据流向不同，平衡阀芯所受的压力可以是阀前压力，也可以是阀后压力。
The ZSFL Pre-action Alarm System is made by equipping the top of the outlet of the deluge alarm valve with a wet-type alarm valve of the same size.
ZSFL预作用装置是在本公司生产的雨淋报警阀出水口上端配接一套同规格的湿式报警阀构成的预作用报警装置。
Solenoid valve installation Pre-installation should refer to the product manual, whether it meet your application requirements.
电磁阀的安装使用安装前应参阅该产品的使用说明书，是否符合你的使用要求。
The concentrate blending plant regulates the fume volume from pre-drying fume exhaust system via controlling the opening of shutter valve.
备料车间预干燥排烟系统自投产以来一直是通过控制百叶阀的开启度来调节其烟气流量。
Objective To study pre and postoperative left ventricular diastolic function in patients with mitral valve replacement.
目的对二尖瓣替换术前后左心室舒张功能的研究。
Main equipment: pre-heater, evaporator, condenser, sugar meter, vacuum system, temperature control, liquid level control, valve fittings, automatic electrical control system;
主要设备：预热器、蒸发器、冷凝器、糖度仪、真空系统、温度控制、液位控制、阀门管件、自动电气控制系统；
In between, an electromagnetic vacuum inflation valve is installed in series, which opens and closes with the switch of the pre-stage pump.
在前级泵与主泵中间串联一个电磁真空充气阀，随前级泵开关而启闭。
If the hydraulic noise in the, valve plate is required to be eliminated, the characteristics of preloading and pre-releasing of the cylinder must be hyperbolic type.
如果想消除液压配流噪声，油缸的预升、释压力特性也必须按双曲线规律变化。
During design of the layout on diesel engine, we performed one-dimensional flow calculation for turbocharger systems, optimized the valve timing and pre-selected the turbocharger.
在柴油机方案设计时，对涡轮增压系统进行了一维流动计算，优化了气门正时，并预选了增压器方案。采用已知的同类机型的放热率进行了缸内过程的计算。
A set pre-sized diverter chamber with a free-floating ball and seat incorporating a flow control release valve is the optimum diversion unit.
前一组巨细与自在浮动球，并归入一个流量节制释放阀座转向器商会是最佳分流单元。
Is Pre-operative Anaemia a Risk Marker for In-hospital Mortality and Morbidity After Valve Replacement?
手术前贫血是瓣膜置换手术后院内死亡率和发病率的危险标记物吗？
The Certified Valve Action is a highly-visible liquid paint marker pre-certified to contain low levels of chlorides, halogens, low melting point metals and sulfur.
标准阀动作是一个非常明显的液体油漆标记预认证，含有低浓度的氯化物，卤素，低熔点金属和硫。
The Certified Valve Action is a highly-visible liquid paint marker pre-certified to contain low levels of chlorides, halogens, low melting point metals and sulfur.
标准阀动作是一个非常明显的液体油漆标记预认证，含有低浓度的氯化物，卤素，低熔点金属和硫。
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