"Factor COSα " CNS Standards List |
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CNS 5276
2017 Edition Factor COSα/COSαw of Spur Gears for Fine Mechanics 精細機械用正齒輪﹙因數COSα/COSαw數值表﹚ |
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CNS 5276
1984 Edition Factor COSα/COSαw of Spur Gears for Fine Mechanics 精細機械用正齒輪（因數COSα/ COSαω數值表） |
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