singl-and-multi-start worm中文什么意思

• 单头多头蜗杆

• start:    START ＝Strategic Arms Reduct ...
• worm:    n. 1.蠕虫；虫，蛆；〔pl.〕(小孩等的)肠虫，寄生 ...
• multi start worm:    多头螺纹蜗杆
• single and multi start worm:    单头多头蜗杆
• single-and-multi-start worm:    单头-多头螺杆