flect＝to bend（弯曲） 变化型 flex
1 (a) [U] deflecting (deflect 1) or being deflected 转向.
(b) [C] instance or amount of this 转向; 偏斜度
*The smallest deflection of the missile could bring disaster. 导弹有极微小的偏斜也可能酿出大祸.
2 [C, U] (amount of the) movement of a pointer or needle on a measuring device from its zero position 偏差（度）.
n [U and C]
the action of making something change its direction
the deflection of the missile away from its target
technical the degree to which the moving part on a measuring instrument moves away from zero