This machine has two kinds of common, spindle box combination machine tools and turn towercombination machine tools.
这类机床常见的有两种，可换主轴箱式组合机床和转塔式组合机床。
2
The paper analyzes the development trend of the steel used for towers in combination with the national steel product supply situation and the transmission tower up-to-date research trend.
结合我国钢材供应现状和输电塔的最新研究动向，对输电塔用钢的发展趋势进行分析。
3
Changan tower as a landmark buildings of the four expo in xian is one of the park, but also a highlight the combination of classical and fashion.