查询词典 backward difference operator

As I watched him I was irresistibly reminded of a pure-blooded, well-trained foxhound, as it dashes backward and forward through the covert, whining in its eagerness, until it comes across the lost scent.

我在一旁观察他的时候，不禁想起了训练有素的纯种猎犬，在丛林中跑来跑去，狺狺吠叫，一直到它嗅出猎物的踪迹才肯甘休的样子。

The existing eguipment on railway rolling stocks, backward in technical property and with a single variety, could not meet the reguirement of high speed and heavy load.Chengdu Freight Wagon Factory, with rich manufacturing and maintaining experiences, is the large-scale factory, which manufactures railway freight wagon and freight engine in China. Already turned deficits into surpluses, with the enforcement of raising speed strategy of railway cargo transportation and quickness of technique renew, CFWFs operating system is now facing great challenge of market opening.

成都机车车辆厂就是其中的一个典型，虽然成都厂是国内从事铁路机车车辆维修和机车电机制造的大型企业，具有丰富的生产维修制造经验，但随着铁路电气化和提速战略的实施，技术更新步伐的加快，成机厂的经营机制在几年前就已面临市场开放的巨大挑战，核心产品上的优势地位也受到很大威胁。

One stone arouses 1000 billow, classmates turn and gabble ground discusses case modern the fact with backward domain of Chinese science and technology.

一石激起千层浪，同学们转而七嘴八舌地讨论起近现代中国科技领域落后的事实。

We join in and discover that we are not at all in the company of a "backward" people, isolated from the rest of the world; quite to the contrary, nearly all the men are gainfully employed in the oil industry.

我们加入其中并且惊奇的发现我们并不身处在一群"古老原始"与世隔绝的人群中，恰恰相反，几乎所有的人都受聘于石油工业。

In couture, necklines are engineered by design and construction to be flattered and to maintain the intended position without gapping, sliding forward or backward , or slipping off the shoulders.

在时装中，领口的款式与结构做得既要吸引人，又要保持在预期的位置上，不豁开，不向前或向后滑动，或滑出肩膀。

The operative carefully stalks the target from behind with the garrote ready The garrote is looped over the target's head across the throat and the operative forcefully pulls the target backward as he turns his own body to place his hips in low against the hips of the target.

准备好绞索后，作为袭击者的你悄悄地从后方靠近目标，迅速用绞索套住目标的脖子，用力向后拉绞索的同时转过身把自己的臀部顶住目标的臀部，转身的同时绞索会深深的勒入目标的喉咙；当目标的重心完全放到臀部之后向上用力将目标从肩部摔出，目标将死于窒息或者脖子折断。

For the plane wave of laser without pulse shape, we derive the express of electron trajectory by the relative Lorentz and energy equations. Note that the orbit of electron becomes a "fat-8" in the average rest frame. For the plane wave of Gaussian laser, we may know that, through relative Hamilton-Jacobi equation, electrons are accelerated in the front of pulse and decelerated backward. Whereas for the non-plane wave of Gaussian laser, we solve the Lorentz and energy equations by fourth order Runge-Kutta method.

对于无脉冲形状的激光平面波是从考虑了相对论效应的Lorentz方程和能量方程出发，得到了电子的运动轨迹方程表达式，在纵向平均速度参照系下该电子的轨迹呈现"8"字形；对于高斯型单色激光平面波是从相对论Hamilton-Jacobi方程出发，得到激光平面波在脉冲前沿加速电子而脉冲后沿减速电子，电子能量增益为零；而对于高斯型单色激光非平面波是从拉格朗日运动方程和能量方程出发，通过四阶Runge-Kutta法数值求解，得到电子在纵向有质动力、横向电场作用下加速电子，最后在强大的横向有质动力作用下从脉冲侧面散射出去，可以获得很大能量增益本文得到了相应的电子瞬时动量解析表达式。

Note this is not the next 3 generations of S + space, but W + space, but the rhythm and the 3rd generation to unanimously. 3 behalf of the ghost dance is to take advantage of the principle of inertia back out quickly jump backward, rather than phenotypes.

注意这里不是接3代的S+空格，而是W+空格，但是节奏要和3代一致。3代鬼跳的原理就是利用向后跳出的惯性迅速的向后跳出，而不显型。

An extremely agile goat antelope of mountainous regions of Europe, having upright horns with backward-hooked tips.

岩羚羊一种欧洲山区活动极为敏捷的小羚羊，有顶端向后弯的直立角

To Grand Central Station would not be accepted in backward Europe .

这种情况在落后的欧洲也是无法接受的。

We were cousins—his grandfather was King of Scots,and his great-grandfather was Henry VII of England.

我们是堂姐弟——他的祖父曾是苏格兰国王，他的曾祖父是英格兰的亨利二世。

I do want to help you, but I am in a quandary now!

我是想帮你，但是我现在左右为难啊！