单词	range of voices
释义	range of voices 嗓音分类
随便看	double roll crusher double-roll crusher double-rolled glass double roller doubleroller calender double roller calender double roller chain coupling double roller chock doubleroller compaction granulator double roller crab Double roller cutting machine of V-belt double rollerleverescapement double roller lever escapement Double-roller meshing double-roller mill double roller mixer double-roller rapid quenching double rollers double-roller safety action double roller type conveyor double roller wave generator double-roller wave generator double roll feed double-roll feed double roll feeding