The PLC is used to improve the whole automation level of the round-roof control system of the astronomical observatory,to deduce the complex degree of the electrical control system,and at the same time to increase the reliability of the whole control system,that the round-roof of the astronomical observatory can be made to reliably finish various anticipative works.
将工控机强大的人机接口功能和丰富的应用软件功能与PLC的高可靠性、强大的指令系统和模块化结构等优点结合起来,实现了两者优势互补,构建了一种性能稳定、功能强大的天文台圆顶智能控制系统。
In the paper,the authors present a large coal fired bogie hearth type annealing furnace with the bay of 4 640 mm and the 90° bricked arch roof.
大型燃煤台车式退火炉跨度为４ ６４０ ｍ ｍ ，采用９０°砖砌拱顶，炉门由电动机带动，通过按钮及限位开关控制炉门的开闭；采用多点检测仪显示炉温，圆图记录仪记录一点的温度。
Since the Mongolian Empire s conquest of Eurasia in the 13th century brought an unprecedented grand occasion for the cultural interflow between China and foreign countries along the Silk Roads, a sudden change in the evolution of Chinese brick and stone vaulted buildings took place.
汉唐以来的我国砖石拱顶建筑在宋元之交发生了结构上质的变化,元明则是砖石拱顶建筑的发展高峰期,有关其成因及结构嬗变因素一直是中国建筑史上颇有争议的命题。
I'm like to have a bowler hat.
我想买一顶圆顶硬礼帽。
The half dome over an apse.
穹内半圆顶教堂后部的半圆形穹顶
A felt hat with a low, rounded crown, similar to a derby.
低圆顶软毡帽一种有低圆顶的毡帽，很象圆顶礼帽
observation dome
观察装置，了望圆顶
dome for electric furnaces and ovens
电炉或电烘炉圆顶盖
domeless solar refractor
无圆顶太阳折射望远镜
Lower Ball Stud Remove/Install
上圆顶螺栓拆卸/安装
A usually transparent glass or plastic dome.
透明玻璃（塑料）圆顶
Remove the upper and lower ball stud nuts.
拆卸上、下圆顶螺栓。
the towering dome of the cathedral
大教堂高大的圆顶.
a dome-shaped building that is pressurized.
受压的一种圆顶形建筑。
The dome was supported by nine columns.
这圆顶由九根柱子支撑。
diameter of top circular-arc juncture circle
齿顶圆弧衔接点圆直径
A slab on the top of the capital of a column.
圆柱顶板圆柱柱顶上的背板
I'd like to have a bowler hat.
我想买一顶圆礼帽。
a stately pleasure-dome decree:
庄严的欢乐之圆屋顶：
a tall tapering spire.
高高的圆锥形的尖顶。
a dome-shaped observatory.
一个圆屋顶的监视台。