闭合电弧接点上电压降的测量的英文

standard guide for measuring voltage droon closed arcing contacts

• 闭合:    close; shutting; s ...
• 电弧:    arc; electric arc; ...
• 接点:    contact; closing; ...
• 上:    upper; up; upward
• 电压:    voltage; electric ...
• 降:    surrender; capitul ...
• 的:    4次方是 The fourth po ...
• 测量:    survey; measure