Taking academy as research narrowly and attaching less and less importance to teaching, which is similar to the problem happened in USA after the World War II, arose in China.
目前我国高校出现了和美国二战后教育界相似的问题，即将学术狭隘地等同于科学研究，教学越来越不被重视。
High-pressure feedwater pump is one of the important auxiliary equipment of power unit. Its vibration problem happened frequently has seriously influenced the safety running of power unit.
高压给水泵组是发电机组的重要辅机设备，振动引起故障的发生率高，严重影响机组的安全运行。
This Paper Provides a kind of new designing form used in the photoelectric switching circuit. It solves the problem happened at the photoelectric switching circuit with low voltage and wide range.
提出了一种新的光电开关电路设计形式（差分形式的光电开关电路），解决了在低电压宽供电电源下，光电开关电路难以正常工作的问题。
This Paper Provides a kind of new designing form used in the photoelectric switching circuit. It solves the problem happened at the photoelectric switching circuit with low voltage and wide range.
提出了一种新的光电开关电路设计形式（差分形式的光电开关电路），解决了在低电压宽供电电源下，光电开关电路难以正常工作的问题。
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