?常开触点
... normal operating contact 定位动作接点 normal open contact 常开触点 normal polar contact 极性定位接点 ...
Ronaldsway airport is open as normal but passengers are being advised to contact their airline for updates.
BBC: Isle of Man snow leads to overnight road closures
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。