Practice proves that it can well and truly judge whether there is voltage or not and tell the range of the voltag…
实践证明，它能够非常准确的判断市电是否闯入以及市电范围，此产品将在电信部门有很大的作用空间。
Practice proves that it can well and truly judge whether there is voltage or not and tell the range of the voltag…
实践证明，它能够非常准确的判断市电是否闯入以及市电范围，此产品将在电信部门有很大的作用空间。
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