open-and-shut control开关控制;开关调节
open-and-shut mode开
open-and-shut project一目了然
open-and-shut servo继电伺服系统
open-and-shut controller开关式控制器
open-and-shut case容易侦破的案子
open-and-shut action开
open-and-shut valve双位开关阀
It is an open-and-shut case一目了然
ADJ（形容词） If you describe a dispute or a legal case as open-and-shut, you mean that is easily decided or solved because the facts are very clear. (争论、法律案件等)容易裁决的 [usu ADJ n]
It's an open-and-shut case. The hospital is at fault.
这是一件容易裁决的案子，责任在医院一方。