感应同步器有直线式和圆盘式两大类,前者用于( ),后者用于测量量量( )
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
感应同步器是一种应用电磁感应原理制造的高精度检测元件,有直线和圆盘式两种,分别用作检测直线位移和转角。
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