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1.The hermetically sealed electrical apparatus is used to protect sensitive electronics from external interference.
这种密封的电气设备用于保护敏感电子设备免受外部干扰。
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2.The engineer carefully inspected the hermetically sealed electrical apparatus before installing it.
工程师在安装之前仔细检查了密封的电气设备。
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3.The hermetically sealed electrical apparatus was designed to provide a secure and reliable connection for long-distance communication.
这种密封的电气设备被设计用来提供一种安全且可靠的长距离通信连接。