Read Edit View history 凿岩 záoyán rock drilling Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 凿岩/ 鑿岩 záoyán rock drilling the process of drilling or boring into rock, typically used in mining or construction context Edit Delete References Add reference No references for this word.
凿岩/ 鑿岩 záoyán rock drilling the process of drilling or boring into rock, typically used in mining or construction context Edit Delete