1) door for manhole,manhole cover
人孔盖
2) flush manhole cover
平置人孔盖
3) raised manhole cover
升高人孔盖
4) tank hoods
油罐人孔盖
5) manhole cover seal ring
人孔盖密封圈
1.
The simulation calculation is made on the manhole cover seal rings that are being used and produced for tank cars for bulk powder goods.
文章对我国目前正在使用和生产的散装粉物罐车的人孔盖密封圈进行了仿真计算,针对存在的问题提出了改进设计的思路,并对改进的人孔盖密封圈进行了仿真计算和试验,取得了良好效果。
6) hinged manhole cover
铰链式人孔盖
参考词条
补充资料：孔盖
1.以孔雀羽毛装饰的车盖。亦泛指华丽的车舆。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。