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Chinese National Standards
中華民國國家標準
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"Helix Angles " CNS Standards List

| Box electric | Photovoltaic devices | Milled rice | cover plate | Cup Square | Method Test | Electrical apparatus | Method test |
B-Mechanical Engineering
CNS 5280    2017 Edition
Helix Angles for Cylindrical Gears
圓柱齒輪之螺旋角
B-Mechanical Engineering
CNS 5280    1984 Edition
Helix Angles for Cylindrical Gears
圓柱齒輪之螺旋角

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