?螺纹底径
... 螺纹底部 bottom of thread; 螺纹底径 core diameter of thread; diameter at bottom of thread; 螺纹底孔钻tap drill; ...
?螺纹内径
... bottom diameter of thread 螺纹底径 diameter at bottom of thread 螺纹底径; 螺纹内径 thread bottom diameter 螺纹内径 ...
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。