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。

youdao

A general technical survey is made of China's sulphuric acid engineering design based on pyrite, metallurgical off gases, gypsum or phosphogypsum and sulphur.

对我国硫铁矿、冶炼烟气、(磷)石膏、硫磺制硫酸的工程设计进行全面的技术总结。

youdao

This paper introduces the composition, the working principle, and the technical characteristic of GPS system, and give the application of GPS survey technology in highway engineering survey.

介绍了GPS的系统组成、工作原理、技术特点等；给出了GPS测量技术在工程测量中的应用；

youdao