中华人民共和国国家标准UDC621.882.15+621紧固件螺栓和螺钉通孔5287872二685代替GB152—76Fasteners~Clearanceholes有关部分forboltsandscr...
UDC621.882.15+6215287872二685GB152—76Fasteners~Clearanceholesforboltsandscrews!"Ml#M150$%&'()*+%,ISO273—1979-./(1&'!dMlMl.2Ml.4M...
