石油勘探电气cad设计图，包括仪表等，可以学习仪表的布置-Oil exploration electrical cad design, including instrumentation, etc.

GE-PAC程序流程图、GE-PAC传感器安装图、GE-PAC管道仪表流程图、GE-PAC控制回路接线图，很受用的AUTOCAD图形-GE-PAC program flow chart of GE-PAC sensor installation diagram, GE-PAC piping instrumentation diagram, GE-PAC control loop wiring diagram, the popular use of AUTOCAD graphic.