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1.2. The ratio of valid stand-off distance to diameter of nozzle (Sv/d) is 8.33, 5 and 3.3 as the variation of ambient pressure as 3.3MPa, 5.3MPa and 8.6MPa.
② 前混合磨料射流在围压3.3MPa、5.3MPa和8.6MPa下的有效靶距喷嘴直径比Sv/d为8.3、5和3.3。收藏指正
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