"Normal Chordal " CNS Standards List| Safety toys | Resinoid Cutting | Metal laboratory | Information technology | Oil cubeb | Method test | Packaging | Method pH | |
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CNS 7578
2022 Edition Normal Chordal Tooth Thickness and Chordal Height of Spur Gears in the 0.5 System ０．５齒制正齒輪之弦齒厚及弦齒冠 |
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CNS 7578
2020 Edition Normal Chordal Tooth Thickness and Chordal Height of Spur Gears in the 0.5 System ０．５齒制正齒輪之弦齒厚及弦齒冠 |
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