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low-pressurepipe irrigation
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low-pressurepipe irrigation
Encyclopedia
农学
农业水土工程
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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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on-off element
on-off measurement
on-off time apportionment method
Ono inequality
onomasiological dictionary
onomastic dictionary
Onon River
On Operatic Singing
Onora O' Neill
on-orbit calibration
on-orbit collection and management of excrement and urine technique
on-orbit control
on-orbit liquid and gas separator technique
on-orbit telemedicine
on-orbit wastewater treatment technique
on-orbit water management system
On Origin of Regular Scripts
Ono Seiichiro
Ono Takash
O-notation
Ono Tozaburo
On Painting
On Parting
On Penetrating the Transformations Based on the Charts of the Book of Changes
On Plague Diseases
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