?平置式人孔盖
... 折刀式门||jack knife door 平置式人孔盖||flush manhole cover 埋入式人孔盖||sunk manhole cover ...
?平板式人孔盖
... 三、人孔盖 Manhole cover 平板式人孔盖 Flush manhole cover 铰链式人孔盖 Hinged manhole cover ...
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。