英语词汇“grade of coal”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	grade of coal
释义	grade of coal 煤品级,煤炭分类,煤炭品质分类,煤级,煤分级
随便看	second statistical Second statistics second steam second steel sheet Second steganography Second Step Second sterilization second sternocostal joint second steward second Stokes pulses second stomach second stomaches second stop secondstop-clock second stopclock second stop clock second stop watch seconds to reload the cartridge second storey second-storey second-storey man second-storey men second-storeys secondstory second strength theory