有种说法是：高低压差的数值比单纯高压和低压值更应值得注意。高低压差应控制在小于40

来源: kittyl 于 2021-02-21 11:46:27 [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.