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freedom water
相关语句
  自由水
     After the super water absorbent is added in the soil, the moisture is absorbed by the resin, so the freedom water in the soil reduces, and the heat exchange effect of the soil reduces, the temperature difference between day and night for living environment of crops reduces, which are beneficial to the growth of crops.
     土壤中加入高吸水树脂后 ,水分被树脂吸收 ,土壤中的自由水减少 ,土壤的热传导效应降低 ,降低了作物生活环境的昼夜温差 ,对作物的生长有利。
短句来源
  相似匹配句对
     in water was for P.R.
     R.
短句来源
     On Freedom
     论自由
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     Water
     水
短句来源
     Freedom
     自由
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According to different construction ways and materials, three kinds of roof, that is ,passive evaporated roof with freedom water surface , water stored roof by means of pore material and hygroscopic roof,are introduced in this paper . Meanwhile the theory of heat insulation and energy efficiency on passive evaporation roofs and suitable weather and places to be used are also discussed .The results show that all kinds of passive evaporated roofs have high efficiency in heat insulation because of water's...

According to different construction ways and materials, three kinds of roof, that is ,passive evaporated roof with freedom water surface , water stored roof by means of pore material and hygroscopic roof,are introduced in this paper . Meanwhile the theory of heat insulation and energy efficiency on passive evaporation roofs and suitable weather and places to be used are also discussed .The results show that all kinds of passive evaporated roofs have high efficiency in heat insulation because of water's high specific heat and large quantity of absorbed latent heat,and that they can be adopted according to the practical local weather ,natural resource and economical development.

根据屋面构造做法和材料的不同 ,本文对自由水表面被动蒸发屋面、多孔材料蓄水屋面以及吸湿被动蒸发屋面等 3类屋面被动蒸发隔热技术进行了分析探讨 ,论证了各类被动蒸发隔热屋面的隔热机理、隔热效果以及适用气候条件或地区。研究结果表明 :由于水的比热大且水分蒸发时能吸收大量的汽化潜热 ,各类被动蒸发屋顶都具有较好的保温隔热性能 ,工程实践中可根据当地的气候条件、资源环境状况以及经济发展水平进行合理选用。

An experiment was conducted to study the changes of water retention properties of soil after water-retention agent with carboxymethyl cellulose and acrylic acid graft copolymerization was added in cropland soil. The results indicate that super water absorbent resin can raise water storage capacity and water retention ability of soil, effectively restrain soil water evaporation, and can make the soil keep more moisture for a relatively long time. With the content of super water absorbent resin increasing, the...

An experiment was conducted to study the changes of water retention properties of soil after water-retention agent with carboxymethyl cellulose and acrylic acid graft copolymerization was added in cropland soil. The results indicate that super water absorbent resin can raise water storage capacity and water retention ability of soil, effectively restrain soil water evaporation, and can make the soil keep more moisture for a relatively long time. With the content of super water absorbent resin increasing, the composing proportion of soil liquid phase increases, and the function of water storage strengthens. The super water absorbent has stimulative effect on the form of soil aggregation structure. After the super water absorbent is added in the soil, the moisture is absorbed by the resin, so the freedom water in the soil reduces, and the heat exchange effect of the soil reduces, the temperature difference between day and night for living environment of crops reduces, which are beneficial to the growth of crops.

羧甲基纤维素接枝丙烯酸保水剂施入农田耕土后土壤持水性质变化的实验结果表明 :高吸水树脂提高了土壤蓄水容量和持水能力 ,能有效抑制土壤蒸发 ,可在较长时间内使土壤维持较多的水分。随着高吸水树脂含量的增加 ,土壤液相组成比例增加 ,蓄水功能增强。高吸水树脂还对土壤团粒结构的形成有明显的促进作用。土壤中加入高吸水树脂后 ,水分被树脂吸收 ,土壤中的自由水减少 ,土壤的热传导效应降低 ,降低了作物生活环境的昼夜温差 ,对作物的生长有利。

When preparing the latex-cement by the latex which made in china, usually we mix the additives to prevent the latex separating out and eliminate the system's air bubble. It is difficult to operate on-the-spot because of the problems which needed to pay much attention to when mixing the additives in the latex cement and the additives are very expensive. All the problems bring many difficulties for developing the latex-cement. By the study in the laboratory, we developed that adding some diatomite to the latex...

When preparing the latex-cement by the latex which made in china, usually we mix the additives to prevent the latex separating out and eliminate the system's air bubble. It is difficult to operate on-the-spot because of the problems which needed to pay much attention to when mixing the additives in the latex cement and the additives are very expensive. All the problems bring many difficulties for developing the latex-cement. By the study in the laboratory, we developed that adding some diatomite to the latex cement slurry system could prevent the latex separating out and eliminate the system's air bubble as well. Furthermore, it could improve the compressing and bending strength of the cement stone, decrease the amount of the freedom water and the leaking water, and improve the slurry system's capacity of preventing the gas flee. This way is convenient on-the-spot.

利用国产胶乳开发胶乳水泥体系时,通常采用外加剂的复配克服胶乳外渗和消除体系气泡。由于复配中需要注意的问题很多,给实际应用带来诸多困难;化学添加剂价格昂贵也增加了固井成本;这些问题给胶乳水泥体系的开发形成了障碍。通过室内研究发现,按照材料科学干涉原理,在胶乳水泥体系中加入一定量硅藻土,可克服胶乳外渗、消除体系气泡,并能提高水泥石的抗压与抗折强度、降低滤失量与析水量、增强体系的防窜性能;同时硅藻土价格低廉且用量较少,现场使用较为方便,具有很好的应用价值。

 
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