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three-point intersection
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expl.
后方交会
在待定点上，对三个已知点观测其方向值，以计算待定点坐标的测量方法
hydroel.st.
后方交会
oil
三点交会
tech.
三点法交会
three-point intersection
:
1 phrase
in 1 subject
Technology
1
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