Surface damage of cold rolled aluminum strip was investigated by observation of roiled surface with a scanning electron microscope.

通过对轧后铝板表面的扫描电子显微观察，就冷轧铝板表面损伤进行了探讨。

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In this thesis, based on the requirement of azimuth scanning X-band phased array antenna design, micro-strip antenna array that has wideband characteristic is studied.

本文根据方位扫描X波段相控阵天线设计的需求，研究了具有宽带特性的串联馈电微带天线阵。

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The morphology of nascent polymer powder shows strip structure by scanning electron microscope. Branched content, crystallinity and crystallite size are similar to those of high density polyethylene.

发现初生聚乙烯粉末具有条状形态结构，其支化度、结晶度及晶粒尺寸均与低压聚乙烯相似，但其熔点和特性粘数较高。

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