俯角的英文：
plunge angle
quadrant depression
angle of depression
depression angle
descending vertical angle
minus angle
v. 把投入；使突然前倾；纵身投入；开始从事
n. 投入水中；开始从事；猛跌
- plunge a country into war
使一个国家陷入战争 - Prices started a downward plunge.
价格开始猛跌。 - He was plunged in despair.
他陷入绝中。
n. 角；角度；观点
v. 垂钓，钓鱼；形成角度，调整角度；着眼于；针对
- The angle of incidence equals the angle of reflection.
入射角等于反射角。 - angle of heel in tur
回旋倾侧角 - initial incidence angle
初始入射角
n. 四分圆,象限,四分仪
- deck sash quadrant
顶棚窗扇形板 - Correction of disturbances is made absorbing or giving active and\or reactive power in the four quadrants.
通过在3600范围内吸收或发出有功功率就可克服扰动。 - The cells of the quadrant in turn become partitioned to form the eight-celled embryo
四分体细胞于是分裂形成八细胞胚。