This paper describes the method of channel survey and technical control essentials of inland rivers (mainly canal), which provide a reference for similar engineering survey.
列举内河(主要是运河)航道测量方法和主要技术控制的要点，可供类似工程测量借鉴。
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He was playing a tiny accordion, the kind such canal men squeezed as they floated down the inland waterways of a westward-expanding America.