deflector
/dɪˈflektə(r)/noun
1- a device that deflects something, in particular偏离装置, 尤指:
1.1
- a plate or other attachment for deflecting a flow of air, water, heat, etc.致偏器。
1.2
- an electrode in a cathode ray tube whose magnetic field is used to deflect a beam of electrons on to a phosphor screen to form an image偏转仪。