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。
Advance in the research of pressure drop computation, pressure measurement and pressure control in extruder head was described.
介绍了挤出机机头中压力的计算方法、测量技术和控制技术的研究进展。
It briefly analyzes the production of the pressure drop in battery pack, its composites and the influence on the powers supply system, and give the control measures.
对通信蓄电池组压降的产生、组成和对供电系统的影响等进行了简要分析，并提出了控制措施。
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