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occulting disc造句

"occulting disc"是什么意思  
造句与例句手机版
  • First proposed in 1989, the original space sunshade concept involves putting a large occulting disc, or technology of equivalent purpose at the L1 gravitation point between the Earth and Sun.
  • It's difficult to see occulting disc in a sentence. 用occulting disc造句挺难的
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