【化】 螺纹扣数

seizure of the threads number of plies number of spring leaf number of windings number of ply quite a number of number of runs number of rejects number of section number of image elements number of reversals even number of threads number of module threads cut number of metric threads cut number of threads per unit length minimum number of pipe threads for connections distribution of threads repeat of warp threads slackening of threads British Association of Threads order of warp threads sequence of threads