查询词典 porous

They are turquoise, because it can discolour; opal, which is also prone to discolouration and can crack; and pearls, as they're very porous and, once damaged, lose their lustre.

他们是绿松石，因为它可以变色；蛋白石，也是容易变色，可以打；而珍珠，由于他们非常多孔，一旦受损，失去光泽。

A porous lanthanum-doped hydroxyapatite coating on commercially pure titanium was prepared by micro-arc oxidation in electrolytic solution containing calcium acetate,β-glycerol phosphate disodium salt pentahydrate and lanthanum nitrate.

采用微弧氧化法在含有乙酸钙、β-甘油磷酸钙、硝酸镧的电解液中在纯钛金属表面原位生成了多孔含La羟基磷灰石的生物涂层。

As to different flow system, dispersion process in fractal porous medium will display different behavior.

对于不同的流动系统，分形多孔介质中的弥散过程将表现出不同的行为。

The results suggest that the model proposed in this study for the porous layer with linearly distributed conductivity and dielectric constant can be expected to apply to other heterogeneous systems as well as membrane systems.

所提出的电导率和介电常数线性分布的多孔层的介电模型，也可用于具有其他电导率、介电常数分布规律的体系。

Further more,the reason that dolomite could improve the performance of porous ceramics was discussed.

另外，探讨了白云石作为成孔剂能显著提高多孔陶瓷性能的机理。

It was found that the porous silicon is composed of nanocrystalline silicon with various sizes and has double layer structure.

结果表明多孔硅是由大小不同的纳晶硅颗粒组成，并具有上小下大的双层结构。

Six players scored in double figures, the point guard defense was a porous as Sponge Bob and they don't show many signs of improving.

其中六名队员得分上双，对于控卫的防守还是充满漏洞，这方面看不出他们有任何长进。

Based on the theories of porous medium seepage and elasticity, the partial differential equations on the response of the well water bearing system to the Earth tide signal are derived under the condition of changing well radius.

根据多孔介质渗流理论和弹性理论，在井孔变径条件下，得出水井含水层系统对潮汐信号响应的偏微分方程，认为井径变化相当于改变了井水柱的有效高度，从而影响了水井含水层系统的固有振动周期。

And also we founded that the resulting porous carbons have good thermal stability, resistance oxidation and electric character.

产品多孔炭具有良好孔结构性能以及良好的热稳定性、抗氧化性能和半导体材料特征。

This work provided the theoretical foundation of on-line control in preparing porous metal by electrodeposition.

这一工作为电沉积法制备多孔金属的在线控制提供了理论依据。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐