有關(guān)恒星如何從呈彌漫狀態(tài)的星云凝縮而來(lái),天文學(xué)家們爭(zhēng)論了很多年.One camp maintains that turbulence within the clouds plays a dominant role.云是由水蒸汽凝縮而成的.A cloud is a condensation of water vapour.染色質(zhì)甲基化后會(huì)出現(xiàn)凝縮.Methylation of chromatin causes it to condense...