1) wentletrap
[英]['wentl,træp] [美]['wɛntl,træp]
梯螺属
2) Trapezotheca
梯管螺属
3) trapezoidal thread
梯形螺纹
1.
Processing the trapezoidal thread by transfering the subroutine finely;
巧妙调用子程序加工梯形螺纹
2.
Stress analysis and optimization of trapezoidal thread at the transmission end of a tie-bar of the plastic injection moulding machine;
注塑机拉杆传动端梯形螺纹的应力分析与优化
3.
Numerical control turning craft of trapezoidal thread;
梯形螺纹的数控车削加工
4) ladder-shaped screw
梯型螺母
1.
Study of error factor on ladder-shaped screw middle-diameter;
基于梯型螺母中径综合误差值的研究
5) spiral stair
螺旋楼梯
1.
Construction technology of large RC spiral stair;
大型钢筋混凝土螺旋楼梯施工技术
2.
Solutions to the technical problems in structural design and element manufacture process of a large-scale steel spiral stair are presented in the paper.
主要介绍某大型钢结构螺旋楼梯在结构设计和构件制作加工过程中所遇到的技术难点问题及 其解决方法,从中探讨如何做到设计、制作和施工过程的相互交融,并阐述了设计、制作和施工人员紧密 合作对于整个工程顺利实施的重要性。
6) screwstairs
螺旋形梯
