{"id":29069,"date":"2023-04-22T03:01:45","date_gmt":"2023-04-22T08:01:45","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-to-make-a-sonar-device\/"},"modified":"2025-01-21T02:38:36","modified_gmt":"2025-01-21T07:38:36","slug":"how-to-make-a-sonar-device","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/ja\/how-to-make-a-sonar-device\/","title":{"rendered":"\u6c34\u4e2d\u97f3\u6ce2\u63a2\u77e5\u6a5f\u81ea\u4f5c\u3078\u306e\u6311\u6226\uff1a\u8a2d\u8a08\u304b\u3089\u88fd\u4f5c\u307e\u3067"},"content":{"rendered":"

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