kē / xué / jiā / tōng / guò / guān / cè / rè / mài / chōng / lái / fēn / xī / héng / xīng / de / jié / gòu / biàn / huà科学家通过观测热脉冲来分析恒星的结构变化。Scientists analyze the structural changes of stars by observing thermal pulses.