This paper introduced control valve selection and its application based on the theory of flow characteristic, pressure drop, flashing, cavitation and noise.
针对调节阀的流量特性、压降、闪蒸、气蚀及噪音等问题介绍了调节阀在选型和应用中的要点。
On account of the high pressure and squeezing action, it operates with less noise and vibration than a drop-forge.
由于较高的压力和挤压作用，它比落锤锻造噪声及振动都小得多。
Method By adjusting the parameters of ultrasound diagnostic equipment to drop image noise and enhance image quality.
方法通过调节超声诊断仪器参数达到降躁及增强图像品质。
A drop of water falls, then another, and then the rain falls on the leaves of the trees and the iron roofs with a noise reminding us of the beating of drums.
风吹打在脸上，雨开始一滴一滴地下着，雨滴打在树叶和铁皮屋顶上，就像敲锣打鼓的声音。
Studying on drop temperature effect, add humidity effect, balance of carbon and oxygen effect, absorbing dirt effect, killing germ effect, decreasing noise effect and air anion effect.
分析了绿地系统的降温效应、增湿效应，碳氧平衡效应，吸尘、杀菌、减噪效应和空气负离子效应。
It is controlled by computer and driven by DC brushless motor without carbon powder pollution. It is self-balance running with low noise and slight vibration. The speed rise or drop quickly.
微机控制，直流无刷电机驱动，无碳刷粉尘污染，快速升降速，操作简便，自动平衡，噪声低，振动小。
When you drop the unit into low lamp mode, fan noise becomes for all practical purposes nonexistent.
当您投下单位入低灯方式，风扇噪声成为为所有实用目的不存在。
The product has the advantage of small volume, big drop out current volume, high insulation, strong arcing ability, simple maintenance, no explosion danger, no pollution, little noise.
具有断流容量大、绝缘水平高、灭弧能力强、寿命长、体积小等优点和维护简单，无爆炸危险，无污染、噪音低等优点。
The product has the advantage of small volume, big drop out current volume, high insulation, strong arcing ability, simple maintenance, no explosion danger, no pollution, little noise.
具有断流容量大、绝缘水平高、灭弧能力强、寿命长、体积小等优点和维护简单，无爆炸危险，无污染、噪音低等优点。
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