根据系统的特点，设计了级联型中高压变频器的实现方案。
According to the characters of the system, the scheme for cascaded high-voltage converter is designed.
本文对中高压CB—G型齿轮泵气蚀发生的原因和过程，应用物理和化学原理进行了分析和探讨，并提出防止气蚀现象的产生应采取的措施。
The purpose of this paper is to analyse the causes and process of air-erosion to CB-G middle and high pressure gear-pump and to advance the measures to prevent air-erosion.
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