孔径

Methods The CS- Gel/β-TCP sponges were prepared by freezing and lyophilizing,which exhibit a three-dimensional porous structure with 200～400 μm pores.

方法采用二次冻干技术制备CS-Gel/TCP复合体，为三维立体孔径200～400μm的海绵状支架材料。

The required porosities for various cases were obtained through varying the diameter of holes and spacing among the holes.

各物理模型通过改变气膜孔径大小和孔间距得到不同的孔阵排列疏密度。

Pseudo-boehmite was prepared with nitric acid and sodium aluminate under the same precipitation conditions but different ageing and washing conditions. The influences of ageing temperature, ageing time and ageing media were studied. It was shown that pronging the ageing time and increasing temperature lead to improve crystallinity of PB., the pore diameter of PB can be increased after NH4HCO3 is added in the ageing medium.

在相同成胶条件下利用铝酸钠溶液和硝酸制备拟薄水铝石，而在不同条件下进行老化，研究了老化温度、老化时间及老化介质的影响，结果表明延长老化时间、提高老化温度和老化pH值有助于结晶度的提高，使用NH4HCO3等具有扩孔作用的溶液作为老化介质会降低产品的堆密度和增加孔径、孔容、比表面积。

An improved method quantizing and enhancing SAR image based on point processing is proposed.

合成孔径雷达图像的自动目标识别技术在国际上已成为目前研究的一个热点。

Drilling requires two or more different drills, or reaming is necessary after being drilled.

钻头孔径具有两种以上的段差或钻通的孔可以铰刀直通加工时。

Further,it puts forward a new method,which is based on the lens' assemble plane and realizes the purpose of optical system imaging clearly by refacing revolution mechanic part two times and adjusting imaging distance.

简单的家用相机，摄相机等含有光学系统的成像仪器，它们所包含的镜头焦距短，相对孔径大，成像像面小，成像质量要求较低，通过机械和光学的加工可以保证，只

This paper describes a new method for matching SAR image and optical image. First, regularizing anisotropic heat diffusion equations is used for segmenting closed-boundary regions in SAR image.

摘要该文提出了一种新的利用非线性扩散方程与Hausdorff测度的合成孔径雷达图像与可见光图像的配准算法。

INVENTIVE SOLID EXPANDABLE TUBULAR APPLICATIONS CAPITALIZE ON WINDOW OF OPPORTUNITY: OPENHOLE LINER SYSTEM PREVENTS LOSS OF HOLE SIZE IN SIDETRACKING OPERATIONS.

创新实体膨胀管应用利用了开窗的时机：裸眼井段衬管系统防止了在侧钻作业时钻孔径的缩小。

So matched filter imaging algorithms improvements and imaging algorithms by other ways appeared. At first, in this thesis the rationale of synthetic aperture radar imaging is briefly synopsized.

本论文着重研究了匹配滤波成像的改进方法以及其它的重建图像算法的原理和方法，特别对合成孔径雷达超分辨率成像算法进行了探讨。

Based on the boiler structure and operation data, the simulation results of the software is discussed in detail, and the reason of the heat difference in water wall tubes of the boiler is find out, which is the ruin or wear and tear of inlet throttles.

计算结果表明，原设计的节流圈孔径尺寸分布是合理的，水冷壁管产生热偏差的主要原因是节流圈磨损和损坏造成的。

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。