"symbols " CNS Standards List| Testing standard | Brinell Hardness | Method Test | Testing methods | Rubber Hinges | Household similar | Ease operation | Plastic Woven | |
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CNS 406
1957 Edition symbols of A.C Machines 交流電機符號 |
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CNS 404
1957 Edition symbols of Switch Gears and Contral Gears 開關及控制設備符號 |
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CNS 405
1957 Edition symbols of D.C . Machines 直流電機符號 |
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