托 Torr
(重定向自Micrometer of mercury)
托(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。
单词 | Micrometer of mercury |
释义 |
Micrometer of mercury
中文百科
托 Torr(重定向自Micrometer of mercury)
托(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 325 101/760 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 015%). 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 0.000millitorr (mTorr) or 0.001 Torr. |
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