záo jǐng
意思解释:(Dig a well)挖掘井。
也叫“井筒掘进”。在岩石、土层中用人力、机械等方法挖掘井筒。包括破碎岩石、装运、井筒支护等工作。…
Also cry pit shaft driving . The method such as manpower, machinery is used to dig pit shaft in layer of rock, earth. Include broken rock, ship, the job such as pit shaft timbering. ...
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