基本解释[机械工程]标准瓦时计英汉例句双语例句With 3-wire and 4-wire real reactive reference standard, it is capable of calibration for various artificial reactive or real reactive watt-hour meter.具有三线、四线真无功标准，能满足各类人为无功或真无功电能表的检定。standard watt-hour meter更多例句词组短语短语Three -phase Standard Watt-Hour Meter 三相标准功率电能表standard watt-hour meter更多词组专业释义机械工程标准瓦时计