求翻译：用工具（如螺丝刀）插入紧急解锁孔顶住闭锁电磁铁的铁柱再将操作孔的挡片用手按下，插入接地开关操作手柄逆时针转动约90度分开接地开关。是什么意思？

Operating hole blanks hand tools (screwdriver) into the emergency unlocking hole withstood latching solenoid-iron columns and then pressed into a grounding switch operating handle counterclockwise rotation of about 90 degrees to separate the grounding switch.

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(For example screwdriver) will insert the urgent solution locking hole with the tool to withstand the block system electro-magnet the iron pole to operate the hole to keep off the piece again to press down with the hand, the insertion earthing switch operation handle anti-clockwise rotation 90 degre

Tools (screwdrivers) into the emergency unlock the bore of the tube locking magnet iron column hole cover plate hand-pressed, insert the earthing switch operating handle around 90 degrees counter-clockwise separate earthing switch.

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