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¼ö½É±âÁظé(â©ä¢ÐññÞØü, Datum level ; D. L, Datum water level, Standard sea level)
¼ö½ÉÀÎ(áôãûìÑ)
¼ö¿ª½Ã¼³(â©æ´ã¿àâ)
¼ö¿ªÀÌ¿ë·á(â©æ´ì¦éÄÖù)
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¼öÀÍÀںδã±Ý(â¥ìÌíºÝ¶Ó½ÑÑ)
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