Existent problem of headwork at yuelai irrigation area in huachuan county 悅來灌區(qū)渠首存在的問題及改造措施
( ceramis headwork : 500 , 000 life cycles , water static pressure max , 35 bar ) 陶瓷閥芯:使用壽命開關(guān)50萬次,靜態(tài)最大耐壓35巴。
Study on automation for hydrologic monitor of headwork of xiaohe irrigation district 山西省瀟河灌區(qū)渠首樞紐工程水文監(jiān)測自動化研究
Hydraulics test research on diversion sluice for extension project of taocha canal headwork 陶岔渠首樞紐擴(kuò)建工程引水閘水力學(xué)試驗(yàn)研究
( 7 ) an optimum design method for the artificial bend channel in diversion headwork of bend type by the theory of minimum rate of energy dissipation ( 7 )將最小能耗率原理應(yīng)用到低水頭彎道式引水樞紐設(shè)計中。
( droit de suite is reasonable . on one hand , its characters define that the increment of an art work not only comes from the headwork of the author , but also profits from the investment of the owner 一方面,美術(shù)作品所具有的特殊性(知識產(chǎn)品屬性、不可重復(fù)性和物質(zhì)依賴性)決定了,藝術(shù)品增值的根本來源是美術(shù)作品作者的智力勞動,同時得益于藝術(shù)品所有人的資金投入。
It is mainly by analyzing the features of sediment concentration distribution in vertical in this paper , and then the problems of effect of headwork gates on sediment prevention , relation between distribution of sediment deposition in irrigated areas and its treatment and utilization , estimating the influence of withdrawing water and sediment on channel deposition and erosion in lower yellow river , and treatment and utilization of the sediment entered into canals are discussed 本文主要從分析計算含沙量沿垂線分布特點(diǎn),探討渠首防沙的作用,分析灌區(qū)泥沙淤積分布特性與泥沙處理利用的關(guān)系,分析計算引水引沙對黃河下游河道沖淤影響及入渠泥沙的處理利用等問題。