tightening 拧紧...tightening scale dial 张紧器刻度盘...tightening screw 紧固螺钉...tightening pulley 皮带紧轮...tightening of credit 紧缩信贷...tightening indicator 张紧指示器...tightening rails 张紧滑轨...tightening bolt 紧固螺栓...
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