As a result, lower working pressure and higher RF power is helpful to prepare good a-C film, meanwhile, laser repetition has evident influence on films growth.
结果表明：在较低气压和较高的射频功率下制备的a - C膜质量较好，同时，激光重复频率对膜生长也有显著影响。
Most switches have a standby power circuit, switching power supply in standby mode still oscillating, but the frequency of normal working hours than lower.
大多数开关电源有待机电路，在待机状态开关电源还在振荡，只是频率比正常工作时要低。
The problem of annual arc welding power source whose output is surge and power factor is lower, is solved by means of main circuit, arc ignition circuit and arc static circuit working together.
通过主回路、引弧电路、稳弧电路的共同作用，解决了一般弧焊电源输出脉动大、功率因数低的缺点。
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