net irrigation requirement中文是什么意思

發(fā)音:

中文翻譯
造句

凈灌溉需水量

net adj. 凈的，純的 (opp. gross) 無(wú)虛價(jià)的 ...
irrigation n. 1.灌溉；水利。 2.【醫(yī)學(xué)】沖洗(法)，〔pl. ...
requirement n. 1.要求，需要。 2.要求物，必需品；需要量；必要 ...
irrigation requirement 灌溉定額; 灌溉需水量; 灌溉需水總量; 灌溉需要量; 灌水定額
irrigation net 灌溉網(wǎng)
net requirement 需求量
crop irrigation requirement 作物灌溉需水量
gross irrigation requirement 毛灌溉需水量
irrigation water requirement 灌溉需水量
minimum net-worth requirement 最低凈值要求
net consumptive requirement 凈消耗量
net water requirement 凈需水量
water requirement， net 凈需水量
net positive suction head requirement 必須的汽蝕余量
irrigation n. 1.灌溉；水利。 2.【醫(yī)學(xué)】沖洗(法)，〔pl.〕沖注洗劑。 bring the farmland under irrigation使農(nóng)田水利化。 an irrigation canal [channel] 灌溉渠。 an irrigation project 灌溉計(jì)劃。 adj. -al ,-ist n. 灌溉者，水利專家。
no requirement 無(wú)要求
requirement n. 1.要求，需要。 2.要求物，必需品；需要量；必要條件，資格 (for)。 the detailed requirements 詳細(xì)規(guī)格。 meet the requirements of the times 適應(yīng)當(dāng)時(shí)需要。 the first requirement 第一要件。
requirement for 需要，需要的東西，要求
drip irrigation and spray irrigation 滴灌、的噴灌; 滴灌、噴灌
irrigation ditch, irrigation channel 灌渠
net in （有效）及; 擦網(wǎng)好球; 擦網(wǎng)入門
net， the 網(wǎng)絡(luò)驚魂
on net 按凈計(jì)算
the net 網(wǎng)路上身; 網(wǎng)絡(luò)驚魂

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例句與用法

The first part is about the computing of crop water requirements ( or crop evapotranspiration ) and net irrigation requirements ( nir ) of ten crops in bojili irrigated district . then the traditional irrigation schedules of winter wheat and summer maize , which are the main crops in bojili , were evaluated with simulating model isareg . third , the field application efficiency in the experimental areas was evaluated from three methods
本文即是由灌區(qū)實(shí)測(cè)資料計(jì)算各種作物需水量，推求其凈灌溉需水量；然后通過模型檢驗(yàn)現(xiàn)行作物灌溉制度是否具有合理性，并對(duì)田間灌溉系統(tǒng)進(jìn)行評(píng)價(jià)，求其實(shí)際田間灌溉效率；最后由兩種不同灌溉制度方案的對(duì)比，確定試區(qū)合理的作物灌溉制度，在此基礎(chǔ)上求出各代表年的田間灌溉需水量和用水過程線。
In the fourth part , the field irrigated water requirement were gotten based on the recommended irrigation schedules and irrigated areas often crops . in this paper , the reference evapotranspition et0 in three counties in bid was computed by penman - monteith method and the crop coefficients , kc of ten crops by kcisa model and the crop water requirements , etc , were computed simply by kc et0 . meanwhile , four representative years by frequency analysis are gotten according to net irrigation requirements and planted areas of different crops in bojili irrigation district
本文首先采用fao最新推薦的penman - monteith方法計(jì)算灌區(qū)的參照騰發(fā)量et _ 0 ，用kcisa按照fao的計(jì)算方法推求十種作物的作物系數(shù)k _ c ；由此基礎(chǔ)上計(jì)算出作物需水量et _ c ，根據(jù)結(jié)果分析了不同作物的需水規(guī)律；同時(shí)用作物缺水量nir (凈灌溉需水量)進(jìn)行頻率計(jì)算，求出了灌區(qū)的四個(gè)代表年，并分析了代表年年內(nèi)自然水分狀況和作物缺水規(guī)律。

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