Fabric base unit, fabric pattern unit and weft-knitted fabric

The invention discloses a fabric basic unit with variable-length coils, which comprises a part A and a part B. The part A is a basic looping coil, and the part B is a looping coil with variable length. The part A and the part B meet the following formula: L = n/wpc, L is the width of the part B, n is the number of coils of the part B, H is greater than h and less than 4h, H is the height of the part B, and h is the height of the part A; lBi is larger than LA, LBi is the length of a single coil of the B part, and LA is the length of the A part; the underfill coefficient delta B of the coil is greater than delta A. The loops of the part B are looser, the air flowing speed is increased, a window for fabric ventilation and evaporation is formed, light weight is achieved, and the fabric has the advantages of being overspeed in dryness, high in ventilation and good in moisture management capacity. The invention further discloses a fabric pattern unit and a weft-knitted fabric with the fabric basic unit. 本发明公开一种具有变化