| 摘要 |
A method for cleaning storm sewers, sanitary sewers, culverts and other drains and waterways is disclosed which includes the steps of prewetting the debris in the waterway with water from a first water directing means, plowing the prewetted debris loose with a plowing means, further wetting the prewetted debris with water from a second water directing means, said first and second water directing means directing water simultaneously, and sweeping the further wetted debris forward with a plunging means.
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