By accomplishing environment effect evaluation and economy assessment analysis , the writer shows the economic reasonableness of applying water - saving reform engineering to the irrigation area 完成了环境影响评价及经济评价分析,说明灌区实施节水改造工程在经济上是合理的。
The engine applies water - cooling system , so the working circumstance is improved the combustion ratio , power and torque . the fuel consumption and the exhausting gas are reduced at the same time 采用水冷技术,改善了热机部分的工作环境,提高燃烧效率,增大了功率和扭矩,同时油耗和排放降低。
Considers that applying water source heat pump can reduce initial investment , operating cost and atmospheric pollution effects when recycling cooling - water from power plant is used 认为在具备利用电厂循环冷却水条件的场所,采用水源热泵为建筑供暖可以减少初投资、运行费用以及对城市的污染影响。
To touch pencil sketches and drawings up , either the western watercolour or the special " ju - school technique " is used . coloured pencil drawings made in the latter way have the applied chinese pigments " washed " by water , or in the other way round , by applying water before pigments 其中铅笔淡彩是在铅笔速写、素描之上,或以西方的水彩画法施以淡薄的颜色,或以"居派"独特的"撞水撞粉法"赋彩。
This research was conducted to : ( 1 ) understand the characteristic and pattern of trickle source infiltration , ( 2 ) study mulched crop evapotraspiration for cotton and corn in a arid climate sandy loam soils . according to the researches of the dissertation , the main results are as follows : ( 1 ) the shape of wetted soil volume is influenced by soil texture , discharge rate and the total volume of applied water in case of trickle source infiltration 本文以粘壤土为研究对象,对微源入渗特性规律进行了系统的室内试验研究,并且对膜下滴灌大田作物棉花和玉米的需水规律进行了野外试验,得到了以下几点结论: ( 1 )地表微源入渗土壤湿润体的形状受到土壤质地、供水强度和灌水时间的影响,一般为半个椭球体。