programmed checking 中文意思是什麼
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Nowdays, domestic ac standard sources are large size, low level, single function and unable programmed control. meanwhile, foreign ac checking instructors are outputting power and very expensive which are not suitable for our country. according to this, we design the system of ac indictor ' s automatic examination
近幾年來，國內陸續的交流標準源，存在著體積大、等級低、功能單一、輸出功率小和無法程式控制等問題；國外公司開發的交流校驗儀，輸出功率很低，無法校驗指示儀表，而且價格十分昂貴，不適合我國的國情。
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