回路图 meaning in English

circuit diagram
contour map

Hydraulic braking systems ; dual circuit brake systems ; symbols for brake circuits diagrams
液压制动装置.双回路制动装置.制动回路图的符号
Finish the pneumatic design of all the functions of hill - drop drill , and produce the pneumatic circuit drawings
对气动部分的各种功能进行了设计，并绘制出气动回路图。
Testing method : according to loop drawing , testing input and output signal on the base of classification such as sinullation signal , digital signal , thermocaple and rtd
测试方法：根据回路图，将输入输出信号按模拟量、数字量、热电偶、热电阻等类型分组调试。