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GB/T 4974-2018 Air compressors,rock drilling machines and pneumatic tools—Preferred pressures 空压机、凿岩机械与气动工具 优先压力 - 中英文版 |
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GB/T 4974-2005 Compressors,rock drilling machines and pneumatic tools-Preferred pressures 空压机、凿岩机械与气动工具 优先压力 - 中英文版 |
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