广谱红外勘测探索卫星(简称“智慧”)于2009年发射升空，已检测了超过500个近地天体，其中123个属于新的科学发现。
Wise, the Wide-field Infrared Survey Explorer launched in 2009, examined more than 500 Near-Earth Objects (NEOs), 123 of which were new to science.
它于1978年发射，所以它已经工作了近三分之二个太空时代—太空时代开始于1957年发射的，围绕太阳运行的第一颗人造卫星。
It was launched in 1978, and has thus spent almost two-thirds of the entire space age, which began in 1957 with the launch of Sputnik, in orbit around the sun.
恒定磁场产生器，位于该磁性扫描器的近端处，在该射束路径之中产生磁场，用于减轻零磁场效应；
A set of entrance magnets are positioned about an entrance of the scanner and generate a constant entrance magnetic field across the path of the ion beam.
讨论了一致性几何绕射理论（UTD）的适用范围，并提出其适合于源离绕射边近的处理方法。
The range of application of uniform geometrical theory of diffraction (UTD) is discussed. It is pointed out that UTD is valid when a source is near the diffraction edge.
讨论了一致性几何绕射理论（UTD）的适用范围，并提出其适合于源离绕射边近的处理方法。
The range of application of uniform geometrical theory of diffraction (UTD) is discussed. It is pointed out that UTD is valid when a source is near the diffraction edge.
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