Most of these micro-organisms cause no problem, and many, like the ones that normally live in the digestive tract and produce life-sustaining nutrients, are essential to good health.
大多数这些微生物不会引起任何问题,而且许多微生物,像那些通常寄生在消化道并产生维持生命的养分的微生物,对良好的健康是必不可少的。
Present a new method to test the micro step angle of step motor in micro step driving mode. Solve the problem of how to test the micro step angle. This paper provide practical data and curve.
提出了一种新的步进电动机微步驱动方式下步距角的测试方法,较好地解决了微小步距角的测量问题,给出了实验数据和曲线的例子。
The dark screen center is the important problem of quality in the manufacture of micro B/W picture tubes.
暗中心是微型黑白显像管制造中突出的质量问题。
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