"Helix Angles" CNS Standards List| Iron steel | Safe Fill | Medical electrical | Classification timber | Symbol Label | Information technology | Control charts | Assembly Tools | |
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CNS 5280
2017 Edition Helix Angles for Cylindrical Gears 圓柱齒輪之螺旋角 |
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CNS 5280
1984 Edition Helix Angles for Cylindrical Gears 圓柱齒輪之螺旋角 |
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