| 摘要 |
In a newly manufactured roller chain (40), the first pitch (P2) measured from one to the other of the two adjacent bushings (42) of any two successive inner links of the chain (40), is smaller than the second pitch (P1, P3), measured from one bushing (42) to another of the two bushings (42) on any one of the inner links of the chain (40), by an amount corresponding to the initial elongation of the chain (40). |
