词汇	常课
释义	常课 cháng kè定额赋税。定额。常課
随便看	Ground pressure disaster ground pressure distribution ground pressure fuel fining ground pressure handling ground pressure in stopes ground pressure monitoring ground pressure observation ground pressure of mine roadway ground-pressure pick-up ground pressure refueling ground pressure regularity ground pressure resistance ground pressure,stratum pressure ground pressure stress ground pressure survey ground prevention technique ground price ground principle point ground probing radar ground-probing radar ground problem ground processing Ground Processing Automated Maintenance System ground processing equipment Ground Processing Facility