| 摘要 |
<p>#CMT# #/CMT# The string (20) has a recess group (30) defined in an outer surface of the string, where the string is made one of nylon, natural gut intestine string, artificial gut intestine string or artificial fiber. The recess group comprises a set of recesses (32, 33) e.g. circular recesses, hexagonal recesses, polygonal recesses and oval recesses, placed in lines and intervals that are formed between the recesses along each line. The recess group is placed parallel to a longitudinal axis of the string, where the recess group extends as a continuous groove that is formed spirally in the string. #CMT#USE : #/CMT# Solid string for a sport racket e.g. tennis racket, badminton racket and squash racket. #CMT#ADVANTAGE : #/CMT# The recesses are defined in the outer surface of the solid string so as to increase friction between the string and a ball, thus enabling a user to efficiently control distance and direction of the ball in a better manner. The string has lightweight. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a perspective view of a sport racket string. 20 : Solid string 30 : Recess group 32, 33 : Recesses.</p> |
