AC fault security power source system is to provide alternating current for unit safety shutdown when power cut happens for a long time due to power grid failure or other reasons.
交流事故保安电源系统是当电网发生事故或其他原因致使火电厂厂用电长时间停电时，提供机组安全停机所必需的交流用电系统。
Furthermore, the deposition rate increases per unit of welding current by decreasing wire diameter, and adjustment of the penetration depth is enabled by alternating current wave form and polarity.
减少焊丝直径，能提高熔敷效率，再加上使电流波形交流化，就可以调整熔深。
It was analyzed why the tolerance of the measurement unit of alternating current for high-power silicon rectification being large. Some concrete improvement measures on it was given.
分析了造成大功率硅整流交流电能计量装置计量误差大的原因，介绍了具体的改造内容。
It was analyzed why the tolerance of the measurement unit of alternating current for high-power silicon rectification being large. Some concrete improvement measures on it was given.
分析了造成大功率硅整流交流电能计量装置计量误差大的原因，介绍了具体的改造内容。
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