make the circuit of meaning in English

环绕...兜一个圈子, 巡视一遍

We made the circuit of the old city walls .
我们绕着旧城墙转了一圈。
We make the circuits of each part and the corresponding analysis , put forward some suggestion for improving the performance of the system . the circuits have been put into practice , and proved to work well
最后，比较系统的讨论了电路性能的测试问题，提出了测量高精度电路的方法和实验系统，并对全部测量数据进行了深入的分析。
The products is of high water hydrophobe device usedin suitable and has the characteristics of aging resistance , resistance , tracking resistance , and corrosive resistance . it can withstand high bent load , strong impact force fn12 - 12 series indoor use high voltage load switch fn12 - 12 and fn12 - 12r is of three phases indoor use ac high voltage load switch for breaking and making the circuit of 50hz , 12kv system under rated loading
Fn12 - 12和fn12 - 12r组合电器是额定电压12kv额定频率50hz的三相高压开关设备用于分合负荷电流闭环电流空载变压器和电缆充电电流关合短路电流配装接地开关的负荷开关，可以承受短路电流