1. screw thread的意思

1. 螺纹：螺钉:screw | 螺纹:screw thread | 准确性:screw

2. 螺纹;螺丝牙：螺栓 bolt | 螺纹;螺丝牙 screw thread | 螺纹切削法 screw thread cutting

3. 丝扣：screw terminal 螺丝接线端 | screw thread 丝扣 | screw-type blank cap 螺纹闷盖

4. 螺丝：Screw-down stop valve 螺旋阀 | Screw-thread 螺丝 | Scribing block 划针盘

1. the raised helical rib going around a screw

    Synonym: thread