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单词 Micrometer of mercury
释义

Micrometer of mercury

中文百科

托 Torr

(重定向自Micrometer of mercury)

(符号为Torr),与毫米汞柱(符号为mmHg)近乎等价,为压强、压力的单位,但并非国际单位制单位 (SI unit) 的成员之一。

英语百科

Torr 托

(重定向自Micrometer of mercury)

The torr (symbol: Torr) is a unit of pressure based on an absolute scale, now defined as exactly 1/760 of a standard atmosphere. Thus one torr is exactly 101325/760 pascals (~133.3 Pa).

Historically, one torr was intended to be the same as one "millimetre of mercury". However, subsequent redefinitions of the two units made them slightly different (by less than 0.000015%). The torr is not part of the International System of Units (SI), but it is often combined with the metric prefix milli to name one millitorr (mTorr) or 0.001 Torr.

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更新时间:2025/6/17 22:32:34