bottom stoping中文什么意思

下向梯段回采

• bottom:    n. 1.底，底部。 2.地基，基础 ...
• stop:    vi. (stopped , 〔诗〕 ...
• stoping:    顶蚀作用; 回采; 岩浆侵入

例句与用法

1. Auto bottom stop machine
   全自动金属下止机h型
2. There are several types and they vary to their different functions including closed ( ce ) end , open end ( oe ) , top stop and bottom stop , etc
   随功能的不同，有开口、闭口、上止、下止等多种款式。