凿岩
(鑿岩)(rock) drilling
Example Sentences
隧道掘进工地上，工人们手持高压风动凿岩机，正在艰难破碎前方阻碍施工的一块质地极其坚硬的花岗岩巨石。
suì dào jué jìn gōng dì shàng, gōng rén men shǒu chí gāo yā fēng dòng záo yán jī, zhèng zài jiān nán pò suì qián fāng zǔ ài shī gōng de yī kuài zhì dì jí qí jiān yìng de huā gǎng yán jù shí.
On the tunnel excavation site, workers holding high-pressure pneumatic rock drills were struggling to break an extremely hard granite boulder that was blocking the construction ahead.
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