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

| Lamp controlgear | Method test | Method test | Standard Atmospheric | Chemical Reagent | Child use | Glass tumblers | 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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