... preliminary breaking 预破碎 preliminary grinding 预磨 preliminary infusion 预先注水 ...
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... preliminary fractionator 预分馏塔 preliminary grinding 初磨 preliminary heat treatment 初步热处理 ...
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Preliminary results presented in this report showed that double side grinding produces very good surface finish, a high precision, and high material, removal rates, in short processing.
本文的研究结果表明，双端面磨削可以在很短的加工时间内获得极高的表面光洁度、高的精度和高的磨除率。
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