孔径

Based on a lot of experiments, it shows the distinct error between classical theory curve which express the relation of cell diameter, cell density and foam tensile strength , tensibility tensile product and re-spring degree and experiment curve. It also can＇t explain the relation of hole degree , area of cell wall with above four mechanics parameter. But the sub-cluster scale theory was demonstrated successfully to explain the relation of cell structure and foam mechanics property on different mold temperature, mold pressure, mold period and different chemical blowing agent, blowing activator content.

通过大量的实验结果理论分析表明：以往的经典理论存在着很多不足之处，它不能有效地解释孔径、泡孔密度与抗拉强度、断裂伸长率、断裂功、及回弹率之间的理论曲线与实验曲线之间的偏差，也不能解释空隙度、泡孔壁厚与上面四者之间的关系，而群子标度理论则成功地论证了在不同模压温度、模压压力、模压时间及不同用量发泡剂、发泡促进剂条件下泡体力学性能与结构之间的相关性。

Translational motion compensation is a very important step in ISAR imaging.

运动补偿是逆合成孔径雷达成像的关键技术。

Simulation results have strongly verified the effectiveness of the algorithm.Fourthly, another adaptive beamforming algorithm for UCA is introduced.

仿真表明，算法能有效地抑制相干干扰，具有明显的小快拍数收敛特性，并比常规的模式平滑算法提高了阵列孔径利用率； 4。

Hollow fiber membrane filter: in the process depth filter the fine material , can remove bacteria, viruses and other microorganisms and filtration precision is 0.01 micron further completely clear the ultramicron, organic polymer, reserve the mineral elements, so that the water taste purity .

中空纤维超滤膜过滤器：深度过滤制水过程中产生的细微物质，可去除水中的细菌，病毒等微生物杂质，过滤孔径精度达0.01微米进一步净化水质，超微粒子、高分子有机物彻底清除。保留水中微量的矿元素，使水的口感纯正。

Conrolled pore sizes proper the pore size distribution of the microporous materials were uniformally achieved by the process of vacuum filtration and calcination. SEM images revealed that ZrO2 porous ceramics with ordered and uniform micropores have been obtained ...

用X-射线衍射和扫描电子显微镜观察了ZrO2多孔陶瓷的相组成和显微结构，结果表明其具有孔径分布均匀的结构特点且ZrO2四方相结构没有改变。

While a lens takes scattered beams of light and focuses them into a cone or ray it them projects on to film, a pinhole works by allowing such a small aperture that the beam coming in is quite small, and therefore remains relatively unscattered.

虽然镜头采取分散光束和重点成圆锥或射线是他们的项目，以电影，一个针孔的作品，让这样一个小孔径的光束将在相当小，因此仍相对

The results indicate that the synthesized xerogel was mesoporous material. The mean diameter of pores and the largest specific surface area of the xerogel were 3nm and 901 m^2g^(-1), respectively.

测试结果表明：合成的硅基干凝胶为平均孔径3nm左右、最大比表面积901平方公尺g^(-1)的介孔结构。

The results show that the perfect Honeycomb pattern films without defects within area of 0.8cm^2 can be obtained at the PS concentration ranges from 20 mg/mL to 50 mg/mL and PS/TEOS mass ratio less than 2. The films cast from the chloroform solution of dicarboxyl terminated PS were more perfect than those cast from the chloroform solution of monocarboxyl terminated PS. The perfect Honeycomb structure films could be obtained with both chloroform and benzene as solvents, but the pore diameter of films cast from benzene solution of PS was larger than that of films cast from chloroform solution of PS.

研究结果表明，聚合物浓度在20~50mg/mL，PS/TEOS质量比大于2：1的条件下可以制备结构完整的多孔膜，且制备的Honeycomb结构在0.8平方公分内无缺陷；采用双羧基封端的聚苯乙烯成膜效果好于单羧基封端的成膜效果；以氯仿和苯作为溶剂均可以制备完全Honeycomb结构的复合膜，但以苯为溶剂制备的多孔膜孔径较大。

The relation between ablated feature size of thin films and femtosecond laser parameters is discussed in details.

本文主要研究分析了刻蚀产生的线宽与激光功率、加工速度、扫描次数、显微物镜数值孔径之间的关系。

Furthermore, in order to obtain satisfactory release, the atomizing diameter should be optimized around 40—120 μm , and the ideal average diameter of the membrane pores should be in the range of 50—150 nm.

为了获得达标的控释肥，必须将雾化颗粒控制在40～120 μm的范围内，将膜的平均孔径控制在50～150 nm范围内，才能获得预期的控释性能。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。