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低压管道输水灌溉
释义
低压管道输水灌溉
Encyclopedia
农学
农业水土工程
释
low-pressurepipe irrigation
低压管道输水灌溉
利用高位水源和缓坡地形落差所提供的自然压力水头或利用低扬程机泵将灌溉水加压(一般压力≤30千帕),再通过低压管道把低压灌溉水输送到田间地头(低压输水管网的最末一级管道出水口工作压力水头一般只需3千帕左右即可),然后利用配套的给水栓进行沟灌或小畦灌的灌溉系统。
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left quasi-regularity
left quasi-simple ring
left quotient
left quotient field
left quotient ring
left quotient space
left radical
left randomly continuous
left rank
left recursion
left recursively enumerable reals
left recursive rule
left regular element
left regularity
left regularizer
left regular representation
left regular ring
left regular semigroup
left remainder
left representation
left representation module
left representative
left representative system
left residual
left resolution
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