macrofragmental coal显: apparent; obvious; noticeabl ...组分: component; constituents煤: coal微组分煤: microfragmental coal组分: [化学] [物理学] component; constituents下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:显组分煤，即可在微信中查询翻译
