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| 19851985 年国家高程基准 | |||
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| 国家高程基准1987年颁布命名的,以青岛验潮站1952 national 1979年验潮资料计算确定的平均海面作为基准面的高程基准 | |||
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| 国家高程起算面 | |||
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National -Vertical Datum : 2 phrases in 1 subject |
| Earth sciences | 2 |
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