high-grade coal separation equipment的意思|示意

美 / / 英 / /

高档选煤设备

high-grade coal 优质煤
super high grade ce we are pirates, these data are stolen from youdao 我们是海盗，这些数据是从有道偷来的
high-grade ce we are pirates, these data are stolen from youdao mortar 我们是盗版者，这些数据是从有道迫击炮上偷来的
high-grade ce we are pirates, these data are stolen from youdao 我们是盗版者，这些数据是从有道偷来的
high-grade hotel 高档的酒店
high-grade caving coal 高档放顶煤
High-grade mechanized coal mining 高等级机械化采煤
high-grade caving top coal 高级放顶煤
rich ore high-grade ore 富矿高品位矿石
high grade ore sinter 高品位烧结矿