This paper focuses on the concentricring fractal array of the low side lobe characteristics in fractal antenna arrays.
在分形阵列天线中重点研究了具有低旁瓣特性的共心圆环分形阵。
2
You learn in grade school that each ring in a tree represents a year. But there's more information hidden away in these concentric rings.
我们在小学就已经了解到，树木的每圈年轮代表一年，不过这些同心圆还隐藏这更多的信息。
3
Metal cock ring soft seat surface pressure to the bearing surfaces, such as the valve core and valve seat is concentricring surface can be a double tight closure.