héng zhǔn ㄏㄥˊ ㄓㄨㄣˇ 恒准（恒准） 固定的标准。《南齐书·武帝纪》：“守宰禄俸，盖有恒准。” 唐 陈佑 《平权衡赋》：“此盖国之恒准，教以顺行，虽因时以考正，乃假人而后成。”
恒频控制的准谐振变换器存在功率限制和高应力缺陷。
The constant - frequency quasi - resonant converter has the problems of power limitation and high stresses.
通过恒速拉伸试验，对一种生产保持架用铅黄铜的准超塑性进行研究。
The quasi-superplasticity of leaded brass for bearing cage was investigated through the constant velocity tensile test.
所用电容器组储能系统采用电容换流式准恒流充电回路。
The capacitor current exchange type quasi-constant current charging system was used for capacitor bank storage energy systems.
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