?定位孔
...定位孔 aligning hole; alignment hole; gage hole; gauge hole; jig-bored hole; locating hole; location holes; pilot holes; positioning hole; spacing hole; sprocket hole; toaling hole 轮冠至安装定位面距离 crown to back .
三导洞施工
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。