雷达

Small aspect change will lead to a big change of the complex amplitude, since, although the variation of the range of each scatterer to radar is very small, it is still large enough compared to the small wavelength and may cause a big phase change.

当视角有微小变化时，虽然各散射点到雷达的距离变化并不大，但相对于微波波长，其相位差的变化相当大，从而使各分辨单元到复振幅有大的起伏，即一维距离像的方向敏感性十分敏感。

The numerical results show that the laser DSS of the moving spherical particle is tightly connected with its speed and scattering zenith angle.

结果表明：运动介质球粒子的激光雷达微分散射截面与粒子的速度和散射天顶角有关，当粒子做低速运动时，由于运动对粒子的激光散射产生的影响可以忽略。

The scattering theory based on the equivalent vibrating scattering center and the mathematical model of the modulation are introduced.

在数学建模的基础上，论证了选取雷达回波的机械振动调制频率序列作为目标识别特征的可行性。

Also at last year's meeting, former US Secretary of State Condoleezza Rice formalized plans to sign a treaty on installing a US radar base in the Czech Republic with Czech Foreign Minister Karel Schwarzenberg.

此外，在去年的一次会议上，美国前国务卿赖斯正式计划签署条约，建立一个美国雷达基地，在捷克共和国与捷克外长卡雷尔施瓦岑贝格。

The OOW shall keep the following in mind when he/she utilizes radars and/or ARPA for watchkeeping duty during at sea or in port.

值班驾驶员在海上或港内用雷达/ARPA值班时要牢记以下几点。

The virtual instrument combined with Ku-Band Microwave Doppler phase detect radar is used for the sea wave height measurement according to the Doppler frequency of the sea wave echo and stores the data.

结合Ku波段多普勒相检雷达，运用虚拟仪器根据海浪回波的多普勒频率来判断海浪变化，测出海浪波高存储数据。

Interaction between current and underwater bottom topography modulates roughness of the sea sur-face, which in turn yields variation of the radar scattering echo.

海流与海底地形的相互作用导致了海表面的粗糙起伏，从而引起对海面观测的雷达散射截面的变化。

Radar simulator takes the important role in seafarer training, assessment of competence, etc.

雷达模拟器在海员培训和适任评估中起着重要的作用。

This paper introduces the application of integrated geophysical investigation, including high precision magnetic, multielectrode method and GPR , to systematically detect a radioactive material source sealed in lead container stored in a chamber buried underground,which has been missed.

采用综合地球物理勘查技术，包括高精度磁测、高密度电法和地质雷达对某处遗留于地下的铅封放射源进行了系统探查，对所获得的各类异常数据进行了分析处理，并指出了放射源所在的具体空间位置。

Radar sets generally employ large antennas to produce narrow beams in much the same way as a search-light reflector.

通常雷达采用大型天线以产生狭窄波束，其方法基本上与探照灯反射镜相似。

They go to town. Would you just ask them?

他们在城里你能问他们吗？

Ossein pretreated for a2 weeks period exhibited the maximum% yield incase of bone gelatin, while the yield from intact skin was higher than that realized incase of de-scaled skin.

预处理时间达2星期的骨胶原表现出最高的骨明胶百分产量，然而从未处理鱼皮中得到的产率比去鳞的鱼皮得到的要高。