English translation for "自下上煤机"

understoker

Similar Words：

"自下给料" English translation, "自下给燃料" English translation, "自下燃烧" English translation, "自下燃烧；欠火的" English translation, "自下燃烧的" English translation, "自下向上凿井" English translation, "自下向上凿井工作" English translation, "自下支撑的" English translation, "自下支承的" English translation, "自下至上" English translation