?双纹螺钉
... two stage turbine 两级汽轮机 two start screw 双纹螺钉 two stream instability 双柳不稳定性 ...
?双头螺纹
双头螺纹 double thread ; Double Start Thread ; two start screw ; DT 双头式 Double heads ; bull-head .
?双纹螺纹螺钉
... 单纹螺纹螺钉 single-threaded screw 双纹螺纹螺钉 double-thread screw; two start screw 槽纹螺旋, 螺槽 flute spiral ...
双头螺纹
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。