A、loxodromic curve
B、curved line concave to the equator
C、straight line
D、spiral approaching the poles as a limit
A、loxodromic curve
B、curved line concave to the equator
C、straight line
D、spiral approaching the poles as a limit
时间:2021-12-31 18:38 关键词: 沿海与大洋航行
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