Irrigation diversion channel

The cross section of the channel is of an inverted trapezoidal structure, the depth of the channel is not larger than 1 m, the angle of a left inclined face and a right inclined face of the channel is 40-60 degrees, the width of the bottom face of the channel is not larger than 3 m, a waterproof fil...

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1. Verfasser: QIU CHANGSHENG
Format: Patent
Sprache:chi ; eng
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