English translation for "square set and back filling method"

方框支架充填采矿法

Similar Words：

"square section" English translation, "square section ring" English translation, "square sections" English translation, "square selector" English translation, "square set" English translation, "square set hammer" English translation, "square set method" English translation, "square set mining" English translation, "square set screws" English translation, "square set screws with chamfered end" English translation