China General ruler for ea GB Standards Search Result |
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1. Ready translated GB standards  and Chinese version GB Standards, you can purchase directly in the web page; After receive your payment, we will send the GB Standards PDF file to your Email within
1~3 days.
2. Other English version GB Standards are not ready translated, only after get your order, then we translate them, time usually need 3-5 days . |
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GB 17740-2017 General ruler for earthquake magnitude 地震震级的规定 - 英文版 |
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GB 17740-1999 General ruler for earthquake magnitude 地震震级的规定 - 英文版 |
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