For different surface roughness of electrodes and glycol concentration of glycol/water mixture, pressurized water breakdown experiments are carried out. Experimental results suggest that Mirza's formula is valid and independent of surface roughness and glycol concentration, and it is accumulative for surface polish, glycol additive, and pressurization for the capability to improve electrical breakdown strength. Moreover, the increase of electrical breakdown strength of water dielectric for surface polish is explained with bubble breakdown. Especially, highest stress of 235.5kV/cm observed in glycol/water mixture with a glycol concentration of 80% at a hydrostatic pressure of 12atm is about one time greater than that in pure water at constant pressure.

通過改變電極表面光滑程度和乙二醇濃度A片视频特黄不卡免费视频中文字幕在线，分別進(jìn)行了加壓水介質(zhì)擊穿實驗www.偷，證實了不同電極表面光滑程度和乙二醇濃度下Mirza關(guān)系式仍成立淫荡的视频，拋光電極表面av黄色在线大全、添加乙二醇與加壓在提高水介質(zhì)電擊穿能力方面具有可疊加性日本比美女黄色网站，將拋光電極表面国产黄色经典Av片、添加乙二醇與加壓分別進(jìn)行了比較，特別在线观看国产精品色，在靜壓12atm午夜免费福利视频、乙二醇濃度80%下，得到實測最高擊穿場強為235.5kV/cm免费一级欧美大片视频在线，其有效時間歸一化后的擊穿場強比常壓下純水的相應(yīng)值提高了112.2%破苞见红视频在线观看，運用氣泡擊穿模型對拋光提高水介質(zhì)擊穿場強進(jìn)行了物理解釋。

The demanded quality and the present condition of the water treatment technology for urban domestic water are introduced,the trend for the development of the water treatment technology is indicated through several methods,which are the static electricity disposal of the water,the utility of middle water,double velum method and man-made swamp.

闡述了城市生活用水的水質(zhì)要求和處理技術(shù)現(xiàn)狀，從靜電水處理夜恋午夜成人影院在线播放网站、中水的利用最新购买91、雙膜法和人工濕地技術(shù)的利用方面指出了生活用水處理技術(shù)的發(fā)展趨勢，并對今后生活用水處理開發(fā)提出了建議向日葵视频在线下载官方下载，為生活用水處理技術(shù)的發(fā)展提供參考白白在线发布。

The invention discloses an hot water production method complementary of air heat source and steam exhaust exhaust heat, is characterized by employing an air source heat pump to heat up tap water by temperature of 8-12 DEG C; recycling steam exhaust in washhouse to reheat up the hot water from the air source heat pump by temperature of 55-70 DEG C, and feeding the hot water into a hot water reservoir for standby.

本發(fā)明公開了一種空氣熱源與乏汽余熱互補的熱水制造方法，其特征在于女人一边做一边潮喷30p，采用空氣源熱泵加熱自來水国产视频黄，使自來水的溫度升高8～12℃；再回收洗衣房內(nèi)的乏汽將空氣源熱泵輸出的熱水進(jìn)行二次加熱在线观看免费A片视频，并將其升溫至55～70℃在线视频激情，將所得熱水送入熱水蓄水池備用。

Water industry is accelerated, modern water industry and sustainable development of water resources will be finally realized. To the status of China rapid economy development, serious shortage of water resources, and great gap between water supply and demand, new thoughts and approaches are studied in this paper to resolve the problems under the condition of socialistic market economy.

本文針對我國經(jīng)濟發(fā)展迅速蜜桃视频未满在线观看免费，水資源嚴(yán)重短缺欧美一区看片网站，供需矛盾異常突出的現(xiàn)狀，在學(xué)習(xí)國內(nèi)外研究成果的基礎(chǔ)上日本迷奷系列在线播放97野外，探索和研究在市場經(jīng)濟條件下解決我國水資源問題的新思路、新途徑免费观看在线播放A片。

Compared with conventional fertilizer application pattern , soil infiltration capacity , water-conserving ability , water availability and water use efficiency under hole-source pattern were all increased to different degree . Water distribution on soil profile, especially the soil water distribution in root zone was more reasonable . Therefore , modulating function of soil reservoir could elaborate effectively .

孔源水肥調(diào)控技術(shù)下黄网免费看，土壤的入滲性能，保水能力久精品国产欧美亚洲色aⅴ大片，水分的有效性及水分利用效率較常規(guī)耕作施肥方式均有不同程度的提高29pao在线视频，對土壤水分剖面分布的調(diào)節(jié)，特別是對作物根域范圍內(nèi)土壤水分的調(diào)節(jié)更趨合理欧美性爱老牛视频，充分發(fā)揮了土壤作為巨大"水庫"的調(diào)節(jié)作用国产激情图片区。

Coal-bearing seams in Shenyu mine area inclines northwest, the bedrock thickness on the coal seams increases northwest, and there are generally red soil water-resisting layer on the bedrock. To study on the coal-water friendly geological conditions for the water-resisting layer during the coal mining process, and to determine mining zones without causing obvious water table decline are an important approach to the water-conserving mining in the fragile ecological mine area of North Shaanxi.

榆神礦區(qū)含煤地層整體向北西傾斜，煤層上覆基巖厚度向北西方向增大色哟哟最新入口，基巖之上普遍分布有紅土隔水層亚洲人成毛片在线播放器，深入研究煤炭開采過程中不對含水層造成破壞的煤水共生地質(zhì)條件，確定既可采煤成年人网站免费视频在线观看、又可實現(xiàn)水位不明顯下降的區(qū)域综合激情区小说区图片区，是陜北生態(tài)脆弱礦區(qū)保水開采的重要途徑。

This thesis discusses the evolvement of Hebei Province water resources situation in detail, making clear the bad influence such as environmental anhydration, soil desertification, aggravating water pollution and deteriorating geologic environment on the Hebei water ecological environment from decrease of water resources and increase of water consumption together with economy development.

論述了河北省水資源演變情勢日日摸夜夜爽毛片免费视频，闡明隨著水資源量的減少和經(jīng)濟發(fā)展用水量的增加對水生態(tài)環(huán)境所產(chǎn)生的不良影響——環(huán)境干化在线看的欧美中文免费网站、土壤沙化、水質(zhì)污染加重国产亚洲精品AA片在线、地質(zhì)環(huán)境惡化等加勒比在线精品视频在线观看。

BEIJING LIDU BOYE WATER TREATMENT CO.,LID is a high-tech enterprise that has abundant experience and be specialized in large-scale civil construction,hotel,apartment and office's air conditioning cooling water,chill and heating water's inhibition and antiscale,living cold-hot water's rust elimination and scale resistance and various water quality processing.

北京麗都博益水處理科技有限公司中國大陸北京麗都博益水處理科技有限公司是一家專業(yè)從事大型民用建筑、酒店、公寓九色91、寫字樓的空調(diào)冷卻水亚洲免费播放黄色网、冰凍水、采暖水的緩蝕阻垢91精品无码视频、生活冷熱水地除垢等各種水質(zhì)處理的企業(yè)毛片网址在线，擁有豐富的水處理工程經(jīng)驗。

BEIJING LIDU BOYE WATER TREATMENT CO.,LID is a high-tech enterprise that has abundant experience and be specialized in large-scale civil construction,hotel,apartment and office's air conditioning cooling water,chill and heating water's inhibition and antiscale,living cold-hot water's rust elimination and scale resistance and various water quality processing.

北京麗都博益水處理科技有限公司 China 北京麗都博益水處理科技有限公司是一家專業(yè)從事大型民用建筑亚洲see图10、酒店一级A毛片美女精品大片、公寓、寫字樓的空調(diào)冷卻水亚欧一级AV网站、冰凍水亚洲一区二区三区动图、采暖水的緩蝕阻垢、生活冷熱水地除垢等各種水質(zhì)處理的企業(yè)亚洲日本色图，擁有豐富的水處理工程經(jīng)驗火辣辣福利视频。

Soil water, a sort of significant water resources, is a key in transformation among surface water, groundwater, atmospherically water and soil water.

水分是干旱、半干旱地區(qū)植被建設(shè)最重要的生態(tài)制約因子美国成年性生活片视频在线观看，對植被恢復(fù)具有極大的限制性av在线视屏。