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06-06
- 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.
2011.10.31
- 这是一个石油开采的电气设计图，欢迎大家下载-This is an oil production of electrical design, welcome to download
sch
- 这是一张油田用的流量表的电原理图，希望对那些想了解这类产品的同仁有所帮助。-This is a flow rate of oil field with electric principle diagram, hope for those who want to understand this kind of product colleagues help.
lvyouqilingjiantu
- 滤油器cad零件图，大学生机械设计课程设计-Oil filter parts diagram, mechanical design course students
ddz
- 画导柱孔，带油位孔- Drawing hole, with oil hole bit