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水准原点
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水准原点
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leveling origin
水准原点
水准测量传递海拔高程的基准点。用精密水准测量联测到陆地上预先设置好的一个固定点,定出这个点的高程作为水准测量的起算高程。
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Poem Drafts of Wangshu
Poem Drafts of Weng Gao
Poem for Wife
Poem of Admonition
Poem of Du Fu by Zhang Jizhi
Poem of Education
Poem of Warning Descendants
Poem on a Tray
Poem on History
Poem on Lord's Feast
Poem on the Tall Buliding by Zhang Ruitu
Poem on Tomb-Sweeping Day
Poems
Poems about Events in Liaodong
poems about objects
Poems and Complementary Poems of Li Fang and Li Zhi
Poems and Complementary Poems of Su Brothers and Their Friends
Poems and Complementary Poems of Yang Yi and His Friends
Poems and Prose on Paintings of Bada Shanren
Poems by Disciplines of the Wu Family
Poems by Emperor Guangxu
Poems by the Poets from Hunan
Poems by the Poets from the Heyday of the Tang Dynasty
poem sentence relay
Poems from the Daoguang, Xianfeng, Tongzhi and Guangxu Eras of Qing
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