短語(yǔ)詞組短語(yǔ)pulsar r time scale 脈沖星時(shí)標(biāo)Pulsar World Time Sports Watch 脈沖星世界時(shí)間運(yùn)動(dòng)手表ensemble pulsar time 綜郃脈沖星時(shí)pulsar time application 脈沖星時(shí)應(yīng)用pulsar time transfer system 脈沖星時(shí)間傳遞系統(tǒng) 返回 pulsar time