• Wireless emergency paging systems is used in disabilities, patient and oldster who will be helped by other person or help other person and danger place.

    无线寻呼系统用于紧急士老前辈耐心帮助其他人帮助他人危险地方

    youdao

  • Wireless emergency paging systems is used in disabilities, patient and oldster who will be helped by other person or help other person and danger place.

    无线寻呼系统用于紧急士老前辈耐心帮助其他人帮助他人危险地方

    youdao

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