望远镜

Puerto Rico is home to the largest, most sensitive radio telescope in the world.

波多黎各坐落着世界上最大灵敏度最高的射电望远镜。400多年来，阿雷西沃天文台测量星系的运动，对金星表面进行映射，研究脉冲星物理学以及接收自外星生命的信号。

Since then, various types of radio telescope developed by leaps and bounds.

从此，各类射电望远镜突飞猛进发展。

Separated from the others, three officers came along, carrying maps and binoculars, with a radioman just behind-obviously the battalion CO and his staff.

三个军官出现了，彼此距离拉得很开，带着地图和望远镜，一个报务兵跟在他们后边——显然这是营长和营部。

They had remained curiously isolated from the changes elsewhere in India. Few European innovations - watches, clocks, telescopes - had reached the Rajput desert.

他们仍然好奇地孤立于其他地方印度的变化，一些欧洲创新手表、钟表、望远镜已达到拉杰普特沙漠。

Theoretical analysis and simulation shows that the direction driving motor accelerates first, and then decelerates to compensate for the eccentricity when the satellite is deviated from laser center with a certain distance, and reacquires the tracking satellite. The needed time from reacquisition to tracking is affected by motor acceleration, telescope′s detecting precision, and detector′s response and treatment time, and the effect of detector precision on the reacquisition and re-tracking time is greater, as a result, the detector response and treatment time is decreased to the least.

理论分析与仿真结果表明，当卫星偏离光斑中心一定距离时，指向驱动电机先加速后减速，补偿这个偏心，重新捕获跟踪卫星；重新捕获到跟踪所需时间受电机加速度和望远镜探测精度以及探测器响应处理时间影响，其中探测器精度对重新捕获到跟踪所需时间影响较大，探测器响应处理时间要减小到最小；为了使从捕获到跟踪过程中卫星始终在扫描光斑范围内，经纬仪驱动电机的最小角加速度为25.5°/s2。

This is a reconstruction of the telescope.

这是一只仿造的天文望远镜。

The printing is free of red ink, making it easy to use at the telescope.

印刷是红墨水，很容易使用的望远镜。

He was one of the first to build and use a reflecting telescope.

他是最早制作和使用反射望远镜的人之一。

In second and third decades of the eighteenth century, however, the reflecting telescope became a reality in the hands of first James Hadley and then others.

在第二次和第三次几十年的十八世纪，不过，反射式望远镜成为现实在手中的第一詹姆斯哈德利，然后别人。

He sent this little instrument to the Royal Society, where it caused a sensation; it was the first working reflecting telescope.

他发出这个小文书，以英国皇家学会，在那里引起轰动，这是第一次工作反射式望远镜。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。