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quality-balance
相关语句
  相似匹配句对
     The quality
     初步起草了因宁片的质量标准。
短句来源
     Quality.
     质量。
短句来源
     Quality-Vocabulary
     中华人民共和国国家标准 质量——术语
短句来源
     Balance of moment
     直升机尾部的小旋翼——力矩的平衡
短句来源
     On Balance of Constitutionalism
     论宪政的平衡性
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Water quality depends not only on natural factors but also on man-made fa-ctors. Water quality is either an ecological factor or a parameter of environm-ental change. The deterioration of groung and surface water quality and quant-ity was considered as one of the desertification indications in the document ofUNEP in 1984. Fresh-water shortage is a worldwide problem especially in the arid zonea.There is a large amount of mineralized water in the lower reaches of rivers.Facts have proved that these water can be...

Water quality depends not only on natural factors but also on man-made fa-ctors. Water quality is either an ecological factor or a parameter of environm-ental change. The deterioration of groung and surface water quality and quant-ity was considered as one of the desertification indications in the document ofUNEP in 1984. Fresh-water shortage is a worldwide problem especially in the arid zonea.There is a large amount of mineralized water in the lower reaches of rivers.Facts have proved that these water can be used as a supplementary source tomeet the demands of daily life and production. This articl deals with the inf-luences of different mineralized water on soil salinity and water quality afterexploitation. Rich-flourine water widely occur in desert areas. It's mainly the firstenvironmental product but the second environment under human activities willcause the overlapping effects. The flourine content is a sensible parameter onthe environmantal changes. Land desertification and salinization may bringrich-flourine problem to the phreatic water. Owing to the backward industrial bases in arid areas, the environ-ment pollution is getting heavier and heavier. From now on we should paymore attention to this problem. Several hydrogeochemical environment problems were discussed in thispaper in order to seek some counter measures to keep water quality balance.

本文主要研究了河西地区各种水体水化学现状、历史和演变。并探讨了矿化水的利用及对环境的影响,以及高氟水的分布、形成、演变,还有局部工业污染等几个主要的水化学环境问题,为防止水质退化、控制水质平衡寻求对策。

According to the thoery on the fluid dynamic cispersion and based on the principle of the part mass conservation of the solute in groundwater, this Paper advanced another new numerical method for solving the problem on fluid dynamic dispersion by applying the nonlinear fundamental functions to handle the permeable velocity and the dispersion coefficient averagely and approxim-atively, that is the approximative finite-element method of the solute quality balance with equal parameters has been brought forth. Compared...

According to the thoery on the fluid dynamic cispersion and based on the principle of the part mass conservation of the solute in groundwater, this Paper advanced another new numerical method for solving the problem on fluid dynamic dispersion by applying the nonlinear fundamental functions to handle the permeable velocity and the dispersion coefficient averagely and approxim-atively, that is the approximative finite-element method of the solute quality balance with equal parameters has been brought forth. Compared with the more accurate method which is given in the literature [1], the method is less accurate, but its amount of calculating work is decreased obiously. The method keeps up the main merits of the methods given in the literature[1], and it is simpler and more convenient.

本文根据流体动力弥散理论,按地下水中溶质局部质量守恒原理,采用非线性基函数,对单元内的渗透速度和弥散系数作了平均化近似处理,导出了求解流体动力弥散问题的另一种新的数值法——等参数溶质质量均衡近似有限元法。与作者在文献〔1〕中给出的较精确的算法相比,虽不甚精细,但计算工作量大为减小,并保持了文献〔1〕中方法的主要优点,比较简便易行。

This paper analyses the calculation behaviors of heat and wet state inside the protected land facilities. The equations of energgy and quality balance for green houses and plastic tents are established. Also, emphasis is given to the calculation method and the expression formula of each component in the equations. The results show that the above method can be used to describe the quan-titive relations among the outside weather conditions, the transparent cover of the protected land, heat supply and ventilating...

This paper analyses the calculation behaviors of heat and wet state inside the protected land facilities. The equations of energgy and quality balance for green houses and plastic tents are established. Also, emphasis is given to the calculation method and the expression formula of each component in the equations. The results show that the above method can be used to describe the quan-titive relations among the outside weather conditions, the transparent cover of the protected land, heat supply and ventilating system and the parameters of heat and wet state in the greenhouses and plastic tents.

分析了保护地设施内热湿状态计算的特点,建立了温室和塑料大棚的能量平衡和质量平衡方程组,着重研究了方程组中各分量的计算方法和表达式。结果表明,利用上述方法,可以定量描述外部气候条件,保护地的透明覆盖、供热通风系统与室内热湿状态参数之间的关系。

 
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