孔径

The paper also places emphasis on a novel method called the phase alignment algorithm for subaperture reference signals.The algorithm adjusts phases of respective subaperture reference signals in order to make them in phase and constructs a new spotlighting window function for SAR imaging.

子孔径参考信号相位对齐算法本质是将各个子孔径参考信号的相位调整为同相，并构造新的聚束窗函数进行SAR成像。

To improve the quality of the image, the defocusing error was used to balance the piston error, spherical aberration and astigmatism, and the results were significantly improved, especially the wave surface variance caused by spherical aberration was decreased by 90%.

运用离焦误差对piston误差、球差和像散进行像差平衡，其效？灾乇鹗乔虿钜鸬牟娣讲钕陆？0％。系统各项像差系数随子孔径数的增加而降低；当子孔径数大于6时，各像差系数变化缓慢。

The stern tube Boring completed, the right of each step aperture site measured, according to Bushing measured data processing, bushings rough machining diameter of the stern tube measured maximum aperture +0.6 mm.

在艉管镗孔完成后，对每个阶梯式孔径进行现场实测，根据实测数据对衬套进行加工，衬套粗加工直径为艉管实测最大孔径+0.6mm。

SEM and TEM were used to characterize the morphologies of the membrane surface and theinner wall of the nanochannels after electroless plating, where cigar-shaped nanochannels were observed with bottlenecks at both ends but a large ID in the middle. After an hour of plating, the ends ID of the nanochannel, which were 100nm originally, were soon reduced to about 30nm and then slowed down.

以SEM、TEM技术对化学镀后滤膜的表面和孔道内部形貌特征进行表征，发现化学镀后的滤膜纳米孔道呈现中间粗、两头细的雪茄状；原始标称孔径为100nm的PCTE滤膜在化学镀1h左右，表面孔径迅速达到30nm左右，此后的下降速度则极为缓慢。

The modulation of cross section is obviously,the intensity of it is smaller as the circular aperture is bigger and the intensity is bigger as the circular aperture is smaller.

平顶高斯光束经过圆孔衍射，孔径大时光强在横截面调制越厉害，但是强度小；孔径小时光强在横截面调制相对小，但是光强度相对大。

The sizes in drill file are different from those in drill chart.

26钻带中的孔径大小与钻孔表中的孔径不符。

The simulation model consists of a sub-wavelength aperture and a metal-coated fiber probe scanning in constant height mode. Influences of the scanning height and the aperture size of the fiber probe on optical field detection are discussed.

选择纳米孔径的隐失场光场和镀金属膜光纤探针建立了近场光探测的理论模型，讨论了探针孔径尺寸、扫描高度等因素对光场探测的影响，以及测量光场与初始光场之间的关系等。

The experimental tubings were PVC plastic tubings. The diameter of experimental PVC tubings is 40 mm, the wall thickness is 2.4 mm and the maximal bursting pressure is 12.5 bar. There were four PVC tubings. Each has a single hole with diameter of 0.9mm、 1.1mm、 1.3mm and 1.5mm.

以直径为40mm，壁厚为2.4mm，最大爆破压力为12.5bar的PVC管为实验材料，首先研究了在0.9bar、1.2bar、1.5bar、1.8bar、2.1bar这5种工作压力下喷孔孔径分别为0.9mm、1.1mm、1.3mm、1.5mm的单孔流量及近似射程，根据实验结果最终选择近似射程最远，喷孔孔径为1.3mm的微喷灌管作为单孔喷水量分布特性研究。

And Finally according to theprogramed algorithms, simulation and experimental stitchings are porformed for testing thealgorithm accuracy. Results show that, the comprehensive errors of theretical andexperimental wavefront stitchings are less than 10~(-6)λand than PV/10 (where PV refering towavefront peak-to-vally value), respectively. Furthermore, experimental research isconducted on the influence of stitching accuracy by sub-aperture overlapping area andstitching modes, with subaperature real-time stitching test for large plano-optic broughtabout.

第三，对编写的算法程序进行了模拟拼接实验和实际拼接实验，测得该算法程序的精度为：理论拼接波面的综合误差小于10~(-6)λ，实际拼接波面的综合误差小于PV／10(PV为被测波面相位峰谷值)；在此基础上，又就子孔径重叠区域大小和拼接模式对拼接精度的影响进行了实验和分析，实现了大口径光学平面的子孔径实时拼接检测。

The relationship between the pressure-loss and the diameters ratio of orifices is verified by the experimental results.

分析了大孔径节流损失特性，并通过试验验证了损失特性与孔径比之间的关系。

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