单词 | as per 31.12. |
释义 | Examples:Mach number, multiples of speed of sound used as unit in aeronautics, with 1 Mach = 1224 km per hr—马赫数 tex, unit of fiber density used in textile industry defined as mass in grams per 1000 m of fiber (loan)—特克斯 See also:per —论 |
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