合一原則 分離原則 交付原則 純粹意思合致原則 物權行為無因性原則 物權行為有因性原則 移轉占有 登記 申請登記 讓與合意 債權契約 負擔行為 物權契約 處分行為 事實行為 不當得利 所有物返還 The principle of combination The principle of separation The principle of delivery The principle of pure-meaning-consensus The abstract nature alternation of the act of real right The causality of act of real right Transfer and occupy Land registration Apply for registration Agreement of transfer Contract of obligation Juristic act of encumbrance Contract of real right Juristic act of disposal Factual behavior Unjust enrichment Recovery