“differential-producing primary device”的概念、定义、翻译、参考文献-科学参考

单词	differential-producing primary device
释义	differential-producing primary device [dif·ǝ`ren·chǝl prǝ´düs·iŋ ¦prī´mer·ē di`vīs] ^ENGINEERING An instrument that modifies the flow pattern of a fluid passing through a pipe, duct, or open channel, and thereby produces a difference in pressure between two points, which can then be measured to determine the rate of flow.
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