A shaft driven upward is called a raise; one that is driven downward is known as a winze.
英
美
释义
从下往上开拓出来的井筒叫天井;从上往下开拓出来的井筒叫盲井。
把海词放在桌面上,查词最方便
触屏版
|
电脑版
©2003 - 2024 海词词典(Dict.cn)
立即下载