短语词组短語high Al2 O3 chromium -ore 高Al2O3鉻鑛Chromium ore powder 鉻鑛粉chromium ore beneficiation 鉻鑛選鑛chromium ore pellet containing carbon 含碳鉻鑛球團high -content chromium ore 高鉻鑛 返回 chromium ore