传送臂的表面涂覆有导电的氟化石墨材料。
A surface of the transporting arm is coated with a conductive fluorinated graphite material.
近几年，西门子公司推出了带石墨触头的新型六氟化硫开关。
For the past few years, a new kind of SF6 switch with graphite contactor had been released by Siemens.
近几年，西门子公司推出了带石墨触头的新型六氟化硫开关。
For the past few years, a new kind of SF6 switch with graphite contactor had been released by Siemens.
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