... 基准信号 reference signal 基准星 proper star 基准压力 reference pressure ...
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proper motion star [天] 大自行恒星
star proper motion 恒星自行
proper name of star clusters 星团专名
That means it cannot be a proper star.
ECONOMIST: X marks the spot
"I share your frustration that there isn't a national infrastructure for the proper recycling of this product, " says Wendy Reed, who manages EPA's Energy Star program.
NPR: CFL Bulbs Have One Hitch: Toxic Mercury
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