查询词典 plane

The characteristic expression of multi-value function by using Riemann surfaces is discussed, and the mapping from s-plane into w-plane is also analyzed. Then the relations between pole distribution of fractional-order systems and time-domain response are provided.

本文通过分析多值函数特性在黎曼平面中的表达以及，s-平面与w-平面的映射关系，给出了分数阶线性定常系统极点分布与时域响应的定性关系。

As for the sublinear impact oscillator, firstly we will introduce a new coordinate transformation. Ittransforms the old impact system from right half plane to the whole plane, and translates the system into a new equal system.

对于次线性碰撞振子，我们首先引进新的坐标变换把右半平面上的碰撞问题转化到整个平面上，且将碰撞系统转化为与之等价的新系统。

In order to prove the existence of the periodic boucing solutions, firstly we will introduce a new coordinate transformation, transform the system from right half plane to the whole plane. And give the relation of the eigenvalues of Hill's equation and the rotation numbers, using this approach and Pioncar -Birkhoff twist theorem, we proved the existence of the periodic bouncing solutions for asymptotical linear oscillator.

对于周期解的存在性证明，我们引进新的坐标变换把右半平面上的碰撞问题转化到整个平面上，给出旋转数与Hill方程的特征值的关系，并以此来度量渐近线性振子，再应用Pioncaré-Birkhoff扭转定理得到周期碰撞解的存在性。

The plane. This totally steam-driven system can rocket a 45,000-pound plane from 0 to 165 miles per hour in two seconds! a

这一蒸汽驱动系统能够将重达4万5千磅重的飞机在两秒钟内把速度从零提升到165英里/小时。

SpaceShipOne and White Knight were, in essence, vastly improved and much cheaper versions of the X-15 rocket plane that set speed and altitude records in the early 1960s and the B-52 bomber that carried the rocket plane under its wing.

太空船1号"和"白衣骑士"，从本质来说，就是在上个世纪六十年代早期打破飞行速度和高度的X-15型火箭飞机和在机翼下搭载着它的B-52轰炸机的大大改进后、便宜许多的"版本。

A technician straps legendary test pilot Scott Crossfield into the cockpit of the X-15 rocket plane before an early test flight. The X-15's maiden flight occurred on June 8, 1959,during which Crossfield was carried aloft in his sleek, black rocket plane beneath the wing of a B-52 from NASA's Flight Research Center.

在一次早期试飞中，一名技术专家用飞行皮带把传奇的试飞员斯科特克罗斯菲尔德固定在X-15火箭推进式飞机的小驾驶室中。1959.6.8，X-15进行了处女航，它挂在一架B-52超级空中堡垒的机翼下从NASA德莱登飞行研究中心起飞，克罗斯菲尔德驾驶着黑色光滑的火箭推进式飞机完成了处女航。

When the optical wavelengths adding/dropping and routing are realized in control plane, transport plane is lack of intelligent monitoring and adjusting to optical level signal. Because of dispersion, power unequalization and somthing else, the transmission quality of ASON can not be guaranteed.

在控制层实现光路的拆分、上下和路由时，传送平面缺少对光信号智能的监控和调节，由于色散、功率不均衡和信号的损伤，ASON的传送质量和业务的生存性就无法得到保障。

For a given routing plane, grid of the routing plane is performed for two-terminal net routing method based on a genetic algorithm according to the obstacle conditions, and then the grid is numbered .

对于给定的布线平面，基于遗传算法的两端线网布线方法首先根据障碍情况对布线平面进行网格化，然后对网格进行编号，用一系列网格序号的有序排列来表示两端点的布线路径，以多条布线路径组成的群体作为优化搜索基础，最后采用遗传算法对此群体进行遗传操作，得到两端线网的最短路径。

This study presents a new multilayer implicit connection graph-based gridless router called NEMO. Unlike the first implicit connection graph-based router that embeds all routing layers onto a routing plane, NEMO constructs a routing plane for each routing layer.

这个研究提出一个新的以隐性连通图为基础的多层非格子绕线器尼摩，它不像之前第一个以隐性连通图为基础的绕线器埋置所有层到一个绕线平面，尼摩一个绕线层就建构一个绕线平面。

For mass jumps, either in training or combat, the ideal drop area is considered to be a level field on which 12 men can jump from each plane of a 5-to 9-plane formation, with one run over the area.

无论在训练还是在战时，理想的大规模空降都被设想为由5-9架飞机（每架飞机上运载12人）组成的编队一次性通过空降场上方进行空降。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。