两副天线之间的水平安装距离与()有关,当两天线最大辐射方向相同时,它们水平间距与()有关。
参考答案:增益;波瓣宽
The government must be very _____ about setting policies and make no decision until they are quite sure it is the right one.
A.particular
B.concerned
C.cautious
D.certain
纸带的绕包方式中,相邻纸带螺旋的一部分相重叠的方式是()。