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几何,计l-一种测量石油螺纹量规的新方法及装置4…”·。·““·”;..二”,.二“”··…”·漏·“·”·”·“·..…’“·”…外圆柱面圆度、圆柱度和作角尺寸综合侧量的理论研究.....……认.‘…;.......…..…‘...........……1侧长中采用微处理器的电细分技术近英文)?
Geometry, meter l-a new method of measuring the oil thread gauges and devices 4 ... “· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·” · · · · · · ····································································································································································································································································· ... ’........... ...... 1 side length using microprocessor subdivision technology in English)?