air blast arc chute.
气吹熄弧沟
the radiator is located out the vacuum arc chute and is hollow metallic cavity.
散热器位于真空灭弧室外，为空心金属腔体
and the liftingswinging angle adjusting device comprises an adjusting disc provided with an arc chute.
所述举摆角调节装置包括一带有圆弧滑槽的调节圆盘。
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