Vibration is caused by periodic high pulsation of airflow resulted from the center eddy behind the inlet damper.
确定振动是由入口调节门后中心涡流引起的气流周期性高脉动造成的。
High efficiency, low noise, no pulsation, air conveyed carrying no fuel, marginal vibration.
效率高、噪音低、无脉动、输送气体中不含油气，振动极微。
The common gear pump has such merits as simple structure, low cost, insensitive oil pollution, etc. but it has such demerits as high flow pulsation, unbalanced radial force, strong noise, etc.
普通齿轮泵具有结构简单、成本低、对油液污染不敏感等特点，但具有流量脉动大、径向力不平衡、噪声高等缺点。
It is characterized by a strong adaptability to the media, smooth flow, pressure pulsation, small, high self absorption capacity, which is not a substitute for any other pump.
它的最大特点是对介质的适应性强、流量平稳、压力脉动动小、自吸能力高，这是其它任何泵种所不能替代的。
This paper discusses the methods of reducing pressure pulsation in high load zone of Francis turbine models.
针对混流式模型水轮机研发中有关降低高部分负荷压力脉动的方法进行了探讨。
To measure high turbidity water of the Yellow Riv er automatically, granular sizes of flocs is determined by using transparent pulsation device through the dynamic modelling.
为了实现黄河高浊度水在线自动检测，通过动态模型实验，使用透光脉动检测仪检测絮凝体的脉动值用以描述絮凝体的颗粒大小。
Comparing with involute gear pumps, circular tooth gear pumps have following characteristics: compact structure, no pulsation, stable rotation, high efficiency, low noise, and long working life.
与渐开线齿轮泵相比，圆弧齿轮泵的特点是：体积小、无脉动、转动平稳、效率高、噪声低以及寿命长等。
The main products: high voltage static generator, spraying gun, high voltage module, stainless steel powder bucket, Vuncheri powder pump, filter cylinder and pulsation valve.
主要产品：高压静电发生器、喷枪、高压模块、不锈钢粉桶、文丘里粉泵、滤筒、脉冲阀。
The main products: high voltage static generator, spraying gun, high voltage module, stainless steel powder bucket, Vuncheri powder pump, filter cylinder and pulsation valve.
主要产品：高压静电发生器、喷枪、高压模块、不锈钢粉桶、文丘里粉泵、滤筒、脉冲阀。
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