1. 申请率；购买率
Take-up is the rate at which people apply for or buy something which is offered, for example financial help from the government or shares in a company.

1. the action of taking up as by tightening or absorption or reeling in

2. any of various devices for reducing slack (as in a sewing machine) or taking up motion (as in a loom)

e.g. a take-up that winds photographic film on a spool