vertical shaft〔名词〕立井,竖井,竖轴详细»
vertical shaft〔名词〕立井,竖井,立轴详细»
vertical shaft〔名词〕立轴;n.立轴,竖轴,竖井详细»
vertical shaft〔名词〕立轴,竖轴详细»
vertical shaft〔名词〕立轴详细»
vertical shaft〔名词〕竖井,竖坑,立轴详细»
vertical shaft〔名词〕立轴详细»
vertical shaft【矿】立井，竖井详细»
vertical shaft〔名词〕立轴详细»
竖管standpipe;distribution pipe;falling main;rising main;riser详细»