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。
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。
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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