常見例句The meaning and features of coal indury safery, safety operation andard , marketing ructure andard and marketing effect andard are analyzed in this paper. 本文分析并得出我國煤炭產業(yè)整體運行不平穩(wěn)、缺乏安全性,產業(yè)內競爭缺乏有效性、可持續(xù)性。 返回 Andard