coarse gradationcoarse grading粗: wide; thick级: level; rank; grade配: join in marriage粗级配的: coarse graded; coarsegraded粗级配混凝土: coarse concrete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:粗级配，即可在微信中查询翻译
