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一、引言遵照伟大领袖毛主席关于“独立自主,自立更生”的教导,在兄弟单位的大力支持下,最近我们试制成功了“T-10-73”型硅晶体管地下金属管线探测仪。它是用来探测埋设在地下的各种类型的金属管线(例如上水管、暖气管、煤气管、压缩空气管以及各种电缆等)的走向和深度的一种仪器。随着社会主义建设事业的发展,很多工业企业埋设在地下的金属管线错综复杂,各种管线的走向和埋设深度各有不同。在改、扩建厂的竣工测量中,必须对这些管线的平
I. INTRODUCTION Following the guidance of Chairman Mao of the great leader on “independence, independence and rejuvenation”, with the strong support of our brother units, we recently succeeded in trial production of the “T-10-73 ” silicon transistor underground metal pipeline detector . It is an instrument used to detect the depth and direction of various types of metal pipelines buried underground, such as plumbing, heating pipes, gas pipes, compressed air pipes, and various cables. With the development of socialist construction, the metal pipelines laid down underground by many industrial enterprises are intricate and complicated. The direction and depth of various pipelines are different. In the change, expansion plant measurement of the completion, these lines must be flat