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Cepheid variable stars are stars whose brightness changes at regular periods.造父變星是一種光線按規(guī)律周期發(fā)生變化的恒星.His first great discovery was made when he recognized a Cepheid variable star.他的首次重大發(fā)現(xiàn)產(chǎn)生于他認(rèn)識了一顆造父變星的時(shí)候....

cepheid的音標(biāo)：cepheid的英式發(fā)音音標(biāo)為：['k?fa?d]cepheid的美式發(fā)音音標(biāo)為：['k?fa?d]...

造父變星...