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porosity相关的网络例句

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Based on modern optimization theory and optimal control theory, this dissertation studies some questions as follows:1. The optimization model of parameter identification of three-dimensional geologic history numerical simulation, algorithm and its applicationGeologic history numerical simulation is a basic content of basin numerical simulation, and the porosity is the major parameter in the evolution and development process of oil-bearing basin. According to the sedimentation and burial mechanism, the physical and chemical principles of oil geology, the mudstone porositys non-linear parabolic partial differential equation has been established.

本文应用现代最优化及最优控制理论,对如下一些问题进行了研究: 1、三维地史数值模拟的参数辨识优化模型、算法及应用地史模拟是盆地数值模拟的一个基础性的研究内容,地层孔隙度是含油气盆地地史演化发育过程中的重要参数,根据地层沉积埋藏机理和石油地质的物理化学原理,通过引入数学物理方程概念,建立了泥岩三维孔隙度场方程,根据问题的特点,给出了方程的定解条件,对方程的动边界也给出了处理方法,并且证明了解的存在性与惟一性,在此基础上建立了以当今实测数据为拟合准则的三维地史数值模拟的参数辨识优化模型,这是一个含有二阶偏微分方程约束的泛函极值问题。

Peat moss is well known for high porosity and perlite has a similar property.

泥炭是众所周知的高孔隙度和珍珠岩也有类似的财产。

A lab test apparatus was developed into evaluating the noise reduction of the porous cement concrete. A constant head permeameter was developed to ascertain the water permeability of porous cement concrete, the influence of the porosity and pore size on the water permeability was studied.

另外,对多孔水泥混凝土的透水性能进行了研究,通过建立有效孔隙率、孔径大小与渗透系数的关系,结合其实际透水性能,得出了满足一般排水性路面排水要求的有效孔隙率范围和级配。

The most perspicuous physical characteristic of the porosity of a soil or rock matrix is its continuity.

岩土格架的孔隙率的最清晰的物理特性是它的连续性。

In order to overcome the shortcomings of acellular dermal matrix used as tissue engineering scaffold material, such as bad permeability, low degradation speed, and strong immunogenicity, a new type of collagen scaffold was prepared by applying various chemical, biological and physical comprehensive methods to deal with pigskin. The microstructure of the scaffold was observed under photomicroscope and scanning electron microscopy, and the in vitro degradation time, permeability, tensile-strength, porosity, shrinkage temperature were tested.

为了克服猪脱细胞真皮基质作为组织工程支架材料渗透性差、降解速度过慢、免疫原性较强等缺点,采用多种化学、生物与物理综合方法处理猪皮制备了一种新型天然胶原支架材料,通过光学显微镜、扫描电镜观察以及体外降解时间、透水汽性、拉伸强度、孔隙率、收缩温度等的测定,对其性能进行了研究。

The microstructure of the scaffold was observed under photomicroscope and scanning electron microscopy,and the in vitro degradation time,permeability,tensile-strength,porosity,shrinka...

实验结果显示:支架中的成纤维细胞、脂肪细胞及组织纤维间质完全去除,胶原纤维得到了松散,并维持其原有的天然三维网络多孔结构;该材料透水汽性处于3000g.m-2.d-1左右,适合创面恢复;体外降解时间处于25~50h之间,并可根据需要调整工艺条件控制降解时间;拉伸强度介于10.20~11.50MPa之间,具有良好的拉伸强度;收缩温度介于70~85℃之间。上述结果表明该材料已解决了猪脱细胞真皮基质渗透性差、降解速度过慢的缺点,并且其透气性和拉伸强度高、降解性优良且可控,符合组织工程支架材料的要求。

The results showed that the existence of porosity was main reason of parts failure.

结果表明:组织疏松的存在是造成零件失效的主要原因。

The porosity of the scaffolds was higher than 88%.

制备得到的复合支架的孔隙率都大于88%。

Porosity is the result of gas in the metal.

气孔是金属中的气体存在的结果。

On this basis, the effect of porosity and pore-fluid on seismic reflection was studied.

在此基础上,研究了孔隙及孔隙流体对地震反射特征的影响。

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推荐网络例句

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了,排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意,我建议我们在价格上大家各让一半。

After an hour and no pup, look for continued contractions and arching of the back with no pup as a sign of trouble.

一个小时后,并没有任何的PUP ,寻找继续收缩和拱的背面没有任何的PUP作为一个注册的麻烦。