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The current density peak of brass welded line appeared at -0.012 V, and a porous corrosion film was formed. The electrode was passivated subsequently. The passivation film was made up of Cu2O, CuCl and ZnO. The passivation film dissolved with electrode potential, and displacement deposition took place between Cu and Zn. The copper redeposition on the electrode surface induced the increase of electrode activity and corrosion rate.

黄铜焊缝在电位-0.012V时出现电流峰，腐蚀产物膜多孔、疏松，随后电极进入钝化区，钝化膜由Cu2O、CuCl和ZnO组成；随电位升高，钝化膜溶解，发生铜锌置换反应，沉积的Cu导致活性电对的形成，增加了合金的腐蚀速度；当电位为+0.87V时，电极表面富集了针状锡和锡的氧化物。

The sand box model is a reduced scale representation of the natural porous medium domain.

砂槽模型是将天然的多孔介质区域按比例缩小的模型。

Also, the kinds of reducing agent played an important role in the formation of porous SnSe nanorods.

通过时间实验，发现棒状的SnSe是由Se纳米管逐渐转变而成的，并讨论了其形成的机理。

With adsorption potential theory and regular solution theory, established the mathematical model of the impact the porous media adsorption has on crude oil bubble point.

借助吸附势理论和正规溶液理论，建立了多孔介质吸附对原油泡点影响的数学模型，并给出了计算结果。

A parametric study is made based on the solutions to illustrate the influence of the minimum quality factor concerning the creep and relaxation behavior of porous medium, the permeability parameter concerning the partial permeable behavior of boundary, and relative rigidity of liner and medium on the frequency response of the cavity.

并进行了算例分析，讨论了反映介质黏弹性性质的最小质量因子，反映孔洞边界半透水性质的渗透性参数及衬砌和介质的相对刚度对问题的影响。分析结果表明：以上参数对圆柱孔洞的频域响应有很大影响。

Therefore, experimental and theoretical study on phase behavior and relative permeability in real porous media under formation condition is very important.

实验和理论上研究真实多孔介质中、地层条件下的凝析油气体系相态以及渗流规律具有更大意义上的实际代表性，是非常重要的。

Road engineering ; ballast embankment and revetment ; experimental research ; porous media ; natural convection ; thermal conductivity parameter

道路工程；块石路堤、护坡；试验研究；多孔介质；自然对流；导热系数

Porous materials ; Structural water ; Thermal conductivity ; Rock wool ; Calcium silicate

多孔材料；结构水；导热系数；岩棉；硅酸钙

In this paper mainly predictive expressions for porous materials are described.The thermal conductivities of rock wool and calcium silicate insulating materials havebeen calculated by these expressions,however,it has been found that there is somedeviation of calculated values from measured data for these insulating materialscontaining structural water.The effect of the structural water on thermal conductivityhas been studied by means of TG-DTA curves of rock wool and calcium silicateinsulating materials,and...

本文介绍了预测多孔材料导热系数的主要计算方程，通过岩棉保温材料和微孔硅酸钙保温材料导热系数的预测，指出这些方法在预测含有结构水的微孔硅酸钙保温材料导热系数时，与实测值会有较大的偏差，进而利用岩棉和微孔硅酸钙保温材料热重和差热曲线，研究了材料结构水对其导热系数的影响，提出了预测含有结构水的多孔材料导热系数的修正方法，其结果与实测值相当吻合。

The invention relates to a method for treating gaseous VOCs by a solid extraction-electro-catalytic oxidation method and a device thereof. The method has the steps that: firstly, an electromagnetic type air compressor is used for controlling the gas flowing velocity by a glass rotameter so as to ensure contaminations in the contamination solution in a gas washing bottle to be stripped into an electrochemical reactor; secondly, microporous aeration heads are distributed in the electrochemical reactor, after being stripped into the electrochemical reactor, the gas is distributed in the electrochemical reactor by the microporous aeration heads, takes parts in the electrochemical reaction and passes through the cathode of absorptive and conductive porous material and the anode of iron sheet in sequence; thirdly, the treated gas finally flows out from the top end of the electrochemical reactor and enters into the gas absorption solution.

本发明涉及一种固态萃取-电催化氧化法处理气态VOCs的方法及装置，方法步骤：第一步，电磁式空压机通过玻璃转子流量计控制气体流速，将气体洗瓶中的污染物溶液中的污染物吹脱进电化学反应器；第二步：电化学反应器中布有微孔曝气头，气体吹脱进入电化学反应器后，通过微孔曝气头分布于电化学反应器内，参加电化学反应，依次经过通过吸附性导电多孔材料阴极和Fe片阳极；第三步，经处理后的气体最后从电化学反应器顶端流出进入气体吸收溶液。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。