Symbols for cylindrical worm and wormwheel
全国齿轮标准化技术委员会(SAC/TC 52)
本标准规定了圆柱蜗杆、蜗轮代号。本标准适用于轴交角∑=90°的圆柱蜗杆传动，及其蜗杆和蜗轮。
This standard is the original Chinese electronic standard.
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