1) Several factors affecting the spirality of aramid knitted fabrics made by the flat knitting machine were discussed.

2) Add the specification that "Spirality after washing will not be tested on the rib and elastic lap."

3) Spirality knitting fabric has bothered enterprises for a long time, and has made bad influences to the appearance of garment.

4) Therefore, if you want to decrease the spirality , you should find a method to decrease the yarn twist liveliness.

5) Extended spirality searching model of dipping sonar and submarine moving models were built.

6) This thesis will try to decrease spirality by using steaming process.

7) Against error accumulation and computation complexity, a novel spirality interpolation sequence scheme is assumed, whichimproves precision of interpolation and reduces maximum error of interpolation.

8) This paper introduces Plato' circle leturing and analyzes its four characteristics: arrangement, spirality, connection, and openness.

9) It analyses and designs the method to test the twist liveliness of yarns and the index to test the spirality angle of the fabric.