holing

[采矿]掏槽落煤法, [建]石板瓦钻孔

词形变化

holings 复数 holings

释义与例句

n.

1.

undercutting in a bed of coal in order to bring down the upper mass.

商务采矿

v.

1.

present participle and gerund of hole

相关短语

black hole n. 黑洞 holing out holing up hole up 躲藏, 把...监禁 hole out 击球入洞 black holing glory holing glory hole n. 炉口；（船员）放东西的地方

词源

From hole (“a hollow”) + -ing.

来源：wiktionary