As cement retarder , the effect of desulphurize ashfuel oil ( DADFO ) was studied here.研究了石油焦脱 硫 灰渣用作水泥缓凝剂对水泥性能的影响.As a raw gas for carburizing, it is necessary to desulphurize in the gas sufficiently.所以作为渗碳用原料气必须对天然气充分脱...
The auditor has questioned the legality of the contracts.审计员质疑这些合同是否合法。The auditor examines the accounts of all county officers and departments.审计员查对所有县官员及各部门的帐目.The very term auditor and audit makes many of us feel unco...