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Earth reference
 earth reference
space 地球基准
| ellipsoids
 Ellipsoid
UN gen. 椎球体
 ellipsoid
avia. 椭球面
hydroel.st. 椭圆体
oil 椭面
space 椭 球; 椭 面
tech. 椭圆 体; 椭球; 椭 面

to phrases
earth reference
space 地球基准
Earth reference ellipsoids
: 16 phrases in 8 subjects
Air defense2
Aviation2
Earth sciences1
Electric machinery1
Electronics2
General1
Space6
Technology1