uncovered area meaning in Chinese

无图地区

The cable is manufactured on argon arc welding , crrugating and slotting production lind with the most advanced technolongy byslotting the holes along outer conductor axis , so the evenly - distributed rdlatively strong radiating signal in the close vicinty lf the cable along ts axis make it possible signal transimission , across long distance in uncovered area
50欧姆漏泄同轴电缆系采用现今最先进的氩弧焊、轧纹和可多向开槽设备，切削一组合适的外导体槽孔，使电缆周围沿信号传输方向具有强度相对均匀的射频信号，实现信号在分立天线盲区的长距离输送。
The purpose of this thesis is to develop the laser assisted wet chemical etching on the gaas substrate . the main contents and contributions include : 1 ) laser - assisted wet mask - etching method and poles - etching method have been proposed laser - assisted wet mask - etching method is that the area which need not etched is covered by mask film , and the uncovered area is processed by laser induced wet etching
本文的工作就是围绕半导体gaas基片的激光化学诱导液相腐蚀技术开展的,主要的研究结果和创新之处如下: 1 )提出了激光诱导液相抗蚀膜掩蔽法和电极腐蚀法抗蚀膜掩蔽法是指在基片表面不需要腐蚀的区域用抗蚀膜覆盖,激光照射在无抗蚀膜区域,对基片进行腐蚀。