毫米汞柱
From Wikipedia, the free encyclopedia
毫米汞柱（符號mmHg）係壓強單位，等於一毫米高水銀柱對液柱底面產生嘅壓強，大致等於一個標準大氣壓嘅1/760。現今多數改用帕斯卡，但量血壓仍保留毫米汞柱。
符號mmHg，mm代表毫米，Hg係水銀卽汞嘅化學元素符號。
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