孔径

The experimental study on improving the pore structure of three kinds of limestone samples with the flash evaporation method is presented.

本文对3种不同产地的石灰石进行了闪蒸改性处理，对改性石灰石颗粒的孔径分布进行了测定，研究了压力、温度等参数对石灰石闪蒸改性的影响。

The artificial disc has the function of disc functional reconstruction. and has no bad effect on the C3/4 intervertebral foraminal pore size.

初步证明人工颈椎间盘置换能恢复置换节段椎间盘功能，对C3/4椎间孔孔径变化无不良影响。

Why would a manufacturer have different porosity frits at the column inlets and outlets? Simple.

为什么有些色谱柱生产厂家会选择入口端和出口端采用不同孔径的筛板呢？

Bubble nucleating and porosity were improved by adding lignin granule, and cell size of the polyurethane foam was decreased. Not only physical property but also thermal property of the material were enhanced. Compared with soft polyurethane foam, tensile strength of lignin reticulated polyurethane foam was raised by 140% at most which lignin content was 5%, and the heat-degradation temperature at the first stage was 50℃ more than soft polyurethane foam which lignin content was 10%. There had been a great improvement in heat resistance of the material. It was showed that weight of biological film reached to 10000 mg/L and 12100 mg/L when the lignin content of the polyurethane foams was 5% and 8% respectively via 30-day biofilm formation testing.

实验结果表明：1，4-二氧六环对木质素的溶解能力是最好的，可使木质素均匀分散在聚氨酯泡沫塑料中；木质素颗粒的加入可改善发泡过程的成核作用，提高聚氨酯泡沫的开孔率，降低泡沫孔径，并且能提高材料的力学、热学性能，与软质聚氨酯泡沫塑料相比，木质素含量5%的聚氨酯泡沫塑料拉伸强度最大可提高140%，木质素含量10%的聚氨酯泡沫塑料发生第一阶段失重的温度提高了50多度，材料的热稳定性大大提高；经过30 天的挂膜测试，木质素含量5%和8%的聚氨酯泡沫塑料的挂模量可分别达到10000 mg/L和12100 mg/L。

The heavy-tailed distribution is used to model the radar cross section for high-resolution synthetic aperture radar images, and its parameters are estimated in this paper.

本文使用拖尾分布来描述高分辨率合成孔径雷达图像的雷达横截面积，并研究拖尾分布的参数估计问题。

The investigation focused on the parameters affecting cooling effectiveness, including: opening ratio, height of ripple board, diameter of holes and height of cooling passage.

研究隔热屏的四种结构参数开孔率、波纹板高度、孔径和冷却通道高度的改变对隔热屏冷却效果的影响。

Given the same total flow effusion from holes, the results show that the heat shield gets a higher average cooling effectiveness when the opening ratio is 3% compared with 6%; cooling effectiveness is sensitive to the height of ripple board, the heat shield gets the highest cooling effectiveness when the dimensionless height of ripple board is 1% compared with 2% and 3.33%; but there is a little influence on the cooling effectiveness of the liner with the change of the diameter of holes and the height of cooling passage.

研究表明：在气膜孔出流总量相同的情况下，3%开孔率比6%开孔率的隔热屏平均冷却效率较高；波纹板高度对隔热屏冷却效果影响较大，波纹板无量纲高度为1%比波纹板无量纲高度为2%和3.33%的隔热屏平均冷却效率高；孔径和冷却通道高度的改变对隔热屏冷却效果几乎没有影响。

One of the main concerns of the highway engineer is to provide an adequate size structure, such that the waterway opening is sufficiently large to discharge the expected flow of water.

21公路工程师主要关心的问题之一是提供合适尺寸的构筑物，以便过水孔径足以排泄预期的洪水流量。

In regard of the problems of large holes to be bored, deep boring into rock and complicated rock layers in construction of bored pile foundations of in\|water piers of main spans of Wuhu Changjiang River Bridge, selection and structural features of cutter heads and hobs of the boring equipment used are described.

针对芜湖长江大桥正桥水中墩钻孔桩基础施工中存在的孔径大、钻岩深、岩层复杂等问题，阐述钻孔设备中刀盘和刀具的选用要求及结构特征。

The design has been applied incertain synthetic aperture radar object simulator system,itis proved that the system is running steadily,and thedemanded function has been realized.

本设计已应用于某合成孔径雷达信号模拟器系统中，使用证明该系统工作稳定，实现了设计中要求的功能。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了