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。
2
Objective To discuss the appraisement method and offer a quantify survey index of the lower lumbar nerve root canal osteal cubage.
目的探讨下腰椎神经根管骨性容积的评价方法，为神经根管提供一种定量测量指标。
3
Objective A retrospective survey of 187 patients who underwent canal down mastoidectomy was performed in order to improve the outcome of the operation , emphasizing on otorrhea.