我在wordreference查了一下
hire purchase：
Hire purchase is a sort of leasing arrangement under which once all the periodic payments have been made,the customer takes ownership of the equipment.
強(qiáng)調(diào)的是leasing arrangement,是一種租賃關(guān)系,而租者擁有租賃期間的是用權(quán).
on installments
更側(cè)重于購(gòu)買的分期付款,比如購(gòu)房首付分期什么的~
租者擁有產(chǎn)權(quán)
希望回答對(duì)你有用