The defects of main detector, Imange Dissector Tube (IDT), in HIPPARCOS Space Astrometry Satellite are discussed.
本文分析了依巴谷空间天体测量卫星主探测器析像管和恒星测绘仪的工作缺点；
To resolve above problem, this paper designed mechanism body and related control parts of steel ball surface defects detector.
而目前，国内各轴承企业以及钢球厂在进行钢球表面缺陷的检测时主要采用人工手检的方式。
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