Contact Resistance. For a relay, the resistance in ohms across closed contacts. For a Keithley switching card/module, also includes the tape resistance and connector terminal resistance.

• 接触电阻对继电器来说，是制闭合触点的电阻，以欧姆表示。对于Keithley开关卡/模块来说，还包括连接电阻和连接器端子电阻。