Have a knife because of a screw - nut drive space.

产生落刀的原因是丝杆螺母传动有间隙.

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It is made up of anchorage steel plate, screw nut and anchorage steel bar.

所研究的锚固系统是由高强螺母、钢锚板和锚固钢筋组成.

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Hsieh Yu butterfly valve is designed for installation with square screw, nut and washer.

协羽的蝶阀安装设计是使用方形螺丝, 螺母及华司所组成.

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