poor grain size distribution不良: bad; harmful; undesirable; u ...级: level; rank; grade配: join in marriage不良级配的: poorly graded不良级配土: poor-graded soil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:不良级配,即可在微信中查询翻译