These machines are whole - close structure double - knit circular knitting machine of 2 - track in dial and 4 - track in cylinder , which can be used to produce various kinds of compound stitches fabrics combining with tuck and float stitches based on rib and interlock stitches 上述機型系上2下4全封閉結(jié)構(gòu)的雙面圓緯機,可編織羅紋或雙羅紋為基礎(chǔ)的可與集圈、浮線相結(jié)合的各類變換組織的坯布。