竹、木排流放 downstream floating of bamboo or log raft
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包括全年季节性通航累计三个月以上的航道，不包括仅供零散流放竹、木排的河道。
It includes the channels open to navigation for over an accumulative 3 months in a year, yet this does not include the river courses, which are only used to float odd logs and bamboo rafts.
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