“velocity-head tachometer”的概念、定义、翻译、参考文献-科学参考

单词	velocity-head tachometer
释义	velocity-head tachometer [vǝ`läs·ǝd·ē ¦hed tǝ`käm·ǝd·ǝr] ^ENGINEERING A type of tachometer in which the device whose speed is to be measured drives a pump or blower, producing a fluid flow, which is converted to a pressure.
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