The OFP and OFD can not only improve the wide-anglescanning ability of the antenna, but also increase the engineering feasibility of the SFOC antenna system.
二者的确定不仅改善了SFOC天线系统的扫描特性 ，而且提高了它的工程可实现性。
2
It has some important advantages such as wideAnglescanning, beam shaping, compact structure and low cost. These advantages make them very well suited to a number of military or civil applications.
And polarizing microscope, wide-angle X-ray diffraction (WAXD) and differential scanning calorimeter (DSC) were used to study the crystalline of PLA membranes prepared at different conditions.