| 摘要 |
The snow equipment comprises a chain (1) installed on the rear wheel and two snow boards (3). The chain is fixed on the deflated tyre and held by reflation of the tyre. The chain does not extend beyond the wheel rim and does not affect the bike braking system. The two snowboards are supported by steel tubes (2) which are fixed on the bike rear frame (5) by means of collars (6).
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