次波

The fundamental and higher-order harmonic ultrasound fields of a zeroth-order Bessel ultrasound field and focused Gaussian field in absorbing medium are computed and simulated by solving the KZK equation using a frequency domain finite difference method.

通过频域有限差分方法求解KZK方程，对吸收媒质中的零阶Bessel超声场、Gauss聚焦超声场进行计算，得到基波和高次谐波声场的数值解和仿真图，计算仿真结果验证了上述的理论结论。

First, one. analyzes the eigenstates-from reachable sets and seeks the one which the target state belongs to. Then using the Grover iteration to amplify the probability amplitude of the desired eigenstate (the modul square of which is the probability of the corresponding eigenstate that the system will collapse to when it is measured). By measuring, the system will then collapse to the desired eigenstate with a probability of almost unity. Finally, one can use the admissible control to drive the system from the eigenstate to the target state.

该策略的核心思想是对本征态能控的系统，通过分析控制目标态与本征态的关系，寻找给定目标态所属的本征态可达集，然后利用量子非结构化搜索的Grover算法，将任意给定的系统初始态经过一定次数的Grover迭代，放大该本征态所对应的概率幅(概率幅的模方对应测量时波函数塌缩到对应本征态的概率)，然后对迭代后的态进行一次测量操作，使系统以接近1的概率塌缩到所需的本征态(前面分析得到的本征态可达集所对应的本征态)，最后用容许的控制将系统从该本征态控制到期望的目标态。

My brother knows him; he's dined more than once with him―nowadays the emperor―in Paris, and used to tell me that he'd never seen a subtler and more crafty diplomat; you know, a combination of French adroitness and the Italian actor-faculty!

我的哥哥认识他，我哥哥不止一次在他那里用膳，那时候他们都在巴黎，我哥哥对我说，他没有见过比波拿巴更加机灵而且敏锐的外交家。您知道，他是一个既有法国人的灵活，又有意大利人的虚情假意的外交家！

The quantitative relation between the phase perturbation of the fundamental field and tripling field has been studied in detail.

以Ⅰ/Ⅱ类角度失谐KDP晶体的高强度三次谐波转换为例，详细研究了三次谐波转换过程中，基频光和三倍频光的波前相位畸变之间的定量变化关系。

The windings in the valve side adopt prolonged delta connection providing the circuit for three-multiple harmonic currents, and implementing 12-pulse converter through fit ratio; this connection between the common winding and prolonged winding can decrease the current impact when phase conversion takes place.

该换流变压器阀侧绕组采用延边三角形接线，为3倍次谐波电流提供通路；通过匝比配合，实现12脉波换流；其延边绕组与公共绕组构成自耦变压器接线，可减少换流器换向时的电流冲击；在公共绕组上连接滤波支路，并调至谐振点，配之以变压器巧妙的零阻抗设计，可以在阀侧实现无功补偿，可实现网侧绕组中无5、7、11、13次特征谐波，即谐波屏蔽。

The Rossoneri struggled to make themselves dangerous. The first dangerous moment came in the 18th minute, when a shot by Pato troubled Bassi quite a bit. A minute later, the Empoli keeper was again a protagonist, as he failed to hold onto a cross by Oddo, and Pato was ready to take advantage.

红黑军团努力制造威胁。18分钟他们第一次制造了威胁，帕托的射门给巴西制造了麻烦。1分钟后，恩波利的门将在一次成为了主角，他接奥多的传中球脱手，帕托利抓住了他的失误。

I spent a year dueling for first chair on tenor sax with Larry McDougal, who looked as if he should have played backup for Buddy Holly, the rocker who died tragically in a bad-weather plane crash in 1959 along with two other big stars, the Big Bopper and seventeen-year-old Richie Valens.

有一年时间，我和拉里。麦克道戈尔积极争夺次中音萨克斯管的首席。麦克道戈尔神气的不得了，似乎觉得自己该为摇滚乐手巴迪。霍利伴奏。1959年，在一次气候恶劣的飞行中，霍利不幸机毁人亡，同时遇难的还有另外两位大明星，一位是比格。波帕，一位是17岁的里奇。

Soft X ray laser radiation ranged from 40 nm to 110 nm is obtained by the 7th to the 19th order harmonic generation in krypton with femtosecond Ti∶sapphire laser operating at 780 nm, and the same phenomena especially the spectral shift is observed after the central wavelength of Ti∶sapphire laser is tuned to 795 nm.

利用中心波长在 780nm线偏振的掺钛蓝宝石超短脉冲激光，在氪气中观察到 40nm～ 110nm第 7～ 19次谐波的软X射线激光辐射，把中心波长调至 795nm时再次观察到相同的现象，特别是观察到谱线的移动，证实观察到的谱线是高次谐波，实验中还观察了谱线强度随气压的变化规律。

Henry David Thoreau, American philosopherJust as one wave following another forms the shoreline, so do our daily actions and thoughts, repeated again and again, form the sum and substance of our lives.

就象海岸线是由一个接一个的波狼永地无休止地相互作用才得以形成一样，日常生活中我们的行动和思考也必须经由一次又一次地反复锤炼，才可能实现量到质飞越，从而使我们的生活得以成型。

This is already the third year they have selected me for the illustrators exhibition in Bologna, but I remember very well the first time they have chosen my work.

今年是我第三次获选进入波隆那插画奖了，对於第一次被选进去的感觉，我记忆犹新呢！

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。