| 单词 | helical |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔screw thread〕The continuous helical groove on a screw or on the inner surface of a nut.螺纹：螺丝上或螺帽内部表面上的连续螺形刻痕美国传统〔screw〕A cylindrical rod incised with one or more helical or advancing spiral threads, as a lead screw or worm screw.螺钉：切割成有一个或好几个螺旋形或呈螺纹的一个圆管形铁棒，如导螺旋或转轮螺旋美国传统〔screw〕A device having a helical form, such as a corkscrew.螺状物：具有螺形形状的仪器，如一个螺丝起子美国传统〔secondary structure〕The folded, helical structure of double-stranded DNA.二级结构：双链脱氧核糖核酸折迭且呈螺旋状的结构美国传统〔spiral〕Coiling around an axis in a constantly changing series of planes; helical.绕线轴的：围绕一轴不断盘旋上升的；螺形的美国传统〔thread〕A helical or spiral ridge on a screw, nut, or bolt.螺纹：螺丝、螺母或螺钉上螺旋型的嵴美国传统〔twist drill〕A drill having deep helical grooves along the shank from the point.螺旋钻：从顶端开始沿着针杆有很深的螺旋槽的钻头美国传统 |
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