Mainghi马因吉mainadj.主要的；最重要的n.干线；总管道；[pl](水、煤、电)供应系统；<古>大海main area of Yueyang city岳阳市主城区main equipment protection主设备保护main memory address space主内存地址空间main composition analysis主成分分析main propelling machinery主推进装置Main yield rate of lumber主产出材率Main grain producing area粮食主产区main shaft overdrive gear主轴超速传动齿轮main manufacture planning主生产计划编制main-and-tail haulage头尾绳运输