ore preparation是什么意思

用法例句

The calculation of production preparation ore quantity is following:developing ore quantity is decided by loading ore quantity of draw wheel slopes and mining preparation,stoping ore quantity are calculated by ore block productive capacity of one year and half year.

王村铝土矿采用长壁式陷落法采矿，生产准备矿量的计算为开拓矿量由采区放矿轮子坡担负矿量确定；采准、回采矿量以矿块一年和半年的生产量计算。