通过对二次群光接收机噪声性能的测量，比较了各种设计方案，验证了理论分析的正确性。

By measuring the receiver's noise performance of second order multiplex, various design schemes are compared and the correctness of the theoretical analysis is verified.

youdao

上周日，在日本横芝光町一群看起来不像农民的人出现在了田间，他们头上带着干净整洁的毛巾，脚上的皮靴还闪闪发光。

YOKOSHIBAHIKARI, Japan — A motley group of unlikely farmers descended on the countryside here one recent Sunday, fresh towels around their necks, shiny boots on their feet.

youdao

现代城市表面所发出来的光，例如马路，停车场，以及建筑群等，都有着同样毁灭性的吸引力。

Light that reflects off shiny urban surfaces, like roads, parking lots and buildings, has an equally devastating power to attract.

youdao