velocity n. 1.迅速;快速。 2.速度,速率。 3.周轉率。 at a velocity of 100 miles per hour 用每小時一百英里的速度。 dart off with the velocity of a bird 像鳥一樣迅速飛跑過去。 drag-free velocity無阻力飛速,真空飛速。 escape velocity(克服地球引力的)第二宇宙速度,逃逸速度。 final velocity (發射物的)終速。 initial [muzzle] velocity(發射物的)初速[腔口速度]。 uniform [variable] velocity勻[變]速。
normal adj. 1.正常的,平常的,普通的;平均的。 2.正規的,標準的,額定的,規定的。 3.智力正常的,精神健全的。 4.【化學】正(鏈)的;中性的;規度的;當量的;【物理學】簡正的;【幾】垂直的;正交的;法線的;中性的。 5.【生物學】不受感染的。 6.【經濟學】按成品最高成本定價的。 n. 1.常態,正常;(人體的)正常溫度;平溫;平均;標準。 2.【幾】法線,垂直(線)。 3.【物理學】平均量; 【化學】當量。 off normal 離位,不正常。
When the beam waist wy of blue - detuned segb along the y direction is 10 mm , and its wx is decreased from 10 mm to 1mm , the absolute diffracted intensity from the segb surface will be 10 times of that from the sgb surface , which can be used to reflect an incident atomic beam with a higher normal velocity 因此,當橢圓高斯光束的w _ y = 10mm ,而w _ xw從10mn減小到1mm ,半束蘭失諧橢圓高斯光束反射面的衍射光強將比同樣參數條件下的sgb反射面的衍射光強提高了10倍。
The paper has improved the existing lifting - line and lifting - surface design method by including the rake and skew and solving the optimum circulation distribution with the optimum theory . the blade geometry is expressed with b - spline for the lift - surface method . the boundary condition on the blade is transformed to minimize the summation of the square of normal velocities , the fair blade geometry can be obtained by present technique and the design quality is better 改進了現有的升力線和升力面設計方法,在升力線設計中計及槳葉的縱傾和側斜的影響,用優化理論求解最佳環量分布,升力面設計中用b樣條來擬合槳葉,將物面邊界條件轉化為求法向速度分量的平方最小,由此可得到光順的槳葉幾何形狀,提高和改進了設計質量。
Our study shows that the optical potential of the diffracted light of the semi - gaussian beam is far higher than that of the evanescent - light wave , and its maximum normal velocity of the incident atoms can be far grater than that of the evanescent - light wave under the same parameters , so the blue - detuned semi - gaussian beam , as a novel atomic mirror , can be used to efficiently reflect atoms with a normal velocity of greater than 1 m / s 研究表明,半束蘭失諧高斯光束衍射光場的光學勢遠大于消逝波光場的光學勢,在同樣的參數條件下,入射原子的最大速度也比消逝波光場的大,所以作為一種新穎的原子反射鏡,半束蘭失諧高斯光束可以被用來有效的法向速度大于1m s的入射原子。