| 摘要 |
A transmission chain formed of alternating outer chain links (2) and inner chain links (3), connected by pins (4); the outer chain links (2) and the inner chain links (3) being formed of outer plates (21) and inner plates (31); each outer plate (21) and inner plate (31) having two widened ends (23,33) each provided with a hole (25, 35) to accommodate the pin (4) and connected by a connection part (24,34) characterized in that the connecting parts (24,34) of the plates (21,31) comprise apertures (26,36) and the pins (4) are hollow.
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