... blend 混合；配料 blast conveyor 气流式输送机 blast 鼓风；送风；爆炸；爆破 ...
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roller conveyor shot blast machine 辊道经过式抛丸机
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That's unfortunate, since in a postindustrial age human capital is supposed to be just as important as capital invested in blast furnaces and conveyor belts.
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