The radiation element, the coupling probe and the feeding system were designed in details, as a result, an X-band 4-element array model was obtained.

阐述了矩形径向线馈电螺旋阵的工作原理，对辐射单元、耦合探针和馈电系统进行了详细设计，进而得到一个X波段4单元阵列天线模型。

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The antenna body is disposed in the clearance area, and includes a radiation element and a fixing plate which is made of the printed circuit board material.

而天线本体被设置于该净空区内，该天线本体包括辐射元件和固定板；

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The structure of multiple-aperture radiation element is a closed cavity which cant be processed with normal machining method and have to be disparted to several parts.

多口径辐射单元结构是一个封闭的腔体，采用常规的机械加工方法无法实现，必须将其分解成几个结构件分别加工，再将其连接成腔体。

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The device's primary source of neutron radiation was the radioactive element californium, but the stream of neutrons produced by the californium was multiplied by passing it through a lattice of highly enriched uranium U-235, whose nuclear fission released additional neutrons.

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