It gave a research result on the manufacture technology of archtube truss, and put forward firstly the instability hoisting technology of single truss.
探索出圆拱形管桁架的分段制作、现场拼接技术，首次开发了单榀桁架非稳定性吊装技术。
2
This paper has mainly introduced when using archtube-plate and screw smoke-tube to reform the DZ-type horizontal packaged boiler. Good results of saving on energy has been got.
文章介绍了采用拱形管板和螺纹烟管技术对DZ卧式快装锅炉加以改造，取得良好节能效果。
3
The problem of the effect on the initial stress to the bearing capacity of the concrete-filled steel tube (CFST)arch bridge are constantly concerned by bridge engineers.