class of finish
... 最后加工,表面处理 finish 最后加工的程度 class of finish 对接接头的最后加工 finish of butt joint ...
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最后结合制作加工的难易程度和经济分析等，提出了上述三类变截面支座的适用条件。
At last, the applying conditions of the abutments are suggested according to the difficult degree of manufacturing and the economy analysis.
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