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这些都是支持的螺旋弹簧和绝缘垫。
These are supported by coil springs and insulation pads.
youdao
框架上装有分闸限位器,合闸缓冲,分闸弹簧及6只支持绝缘子。
The framework with break-brake limit device, close brake buffer, break-brake spring and six support insulator.
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