Another oddity: When paddling through the water, a platypus keeps its eyes, ears and nostrils closed, and its duck-bill serves as an antenna, sensing the faint electric fields surrounding prey.

另外的奇异之处在于：在水下游泳时，鸭嘴兽的眼睛、耳孔和鼻孔都会关闭，此时，其鸭嘴就像天线一般，遥感猎物周围微弱的磁场。

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The problems of guaranteed precision of random dynamic response of closed loop system of 8-meter intelligent caliber antenna under random wind excitation are studied.

研究了8米口径智能天线结构在随机风荷作用下其保精度闭环控制随机响应问题。

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An analysis of the antenna and scattering theory is an important part in the electromagnetic problems, which describes the energy transformation from a closed circuit system to an open space system.

电磁问题中有很大一类是研究天线和散射理论，即由封闭电路系统向空间开放系统的能量转换。

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On Tuesday, Cooper used his keynote address at the Embedded Systems Conference in Boston to run down a list of complaints against the wireless industry that ranged from closed carrier networks to inefficient cellular antenna systems to the design of smart phones like the iPhone, which he argues are overly complex.

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