flue coal dust的意思|示意

美 / / 英 / /

烟道煤尘

悬浮煤尘 ... 悬挂式丘宾筒：suspended tubbing 悬浮煤尘：flue coal dust 悬浮炼尘试验：suspending coal dust test ...

浮游煤尘 ... 矿井爆炸mine explosion 浮游煤尘suspending coal dust；flue coal dust 井孔well ...