相移

Phase shifting interferometry has been widely used and accepted as a fast and accurate non-contact metrology tool. It is widely used to test optical element, optical system, and to detect optical surface and some physical parameter(such as temperature field, density field) related with optical path difference.

移相干涉术作为快速、非接触的精密测量手段，已经广泛地应用于光学零件、光学系统、精密表面的检测和其它与光程差参数相关的物理量的测量。

Based on this, a new WENO difference scheme which based on Dispersion-Relation-Preserving relation is developed, and representative test cases with this scheme for computational aeroacoustics problems has been implemented and compared in order to test capability of wave capturing; In addition, WENO schemes generally do not converge at high order in the presence of contact discontinuity of Euler equations, so a conservative front tracking technique coupling WENO schemes and Level Set method to simulate the translating density profile is presented here, and numerical simulation with this technique for representative test case has been implemented and results show the desired accuracy.

本文研究了高阶精度加权基本无振荡格式及其在双曲守恒律方程中的应用，在此基础上作了两个方面的工作：一是针对高频声波问题构造出一种基于保色散关系的WENO有限差分格式，并对计算气动声学问题的代表性算例进行了大量数值实验，比较了该格式捕捉波数的能力；另外，针对高阶WENO格式在处理Euler方程的接触间断时精度有所降低的问题，研究了利用界面追踪技术Level Set方法和高阶激波捕捉WENO格式相结合的一种守恒追踪方法，并且给出有代表性的密度滑移面问题的算例，得到一致高阶精度的数值模拟结果。

The technology of combine power is adopted, it can realize structure -modularization in system through paralleling power main circuit and exerting technology of parallel combined shift phase PWM, combine great power photovoltaic grid-connected power equipment, improve fault redundancy capability of system, ensure system to work in safety.

采用功率组合技术，通过功率主电路单元并联，运用移相PWM 并联组合技术，实现系统结构模块化，可组成大功率光伏并网发电装置，提高系统故障冗余能力，保证系统安全可靠运行。

Bao. I think he does not know the : quasar physics at all!: A simple reason: astronomers detected redshifts of quasars based on the spectr : al lines emitted from the emission line regions, which are 0.1 to 1 parsec (1p : arsec=3.26 light years) far away from the central black hole. Therefore there : is very little effect from the gravitational redshift!

观察到的类星体的光可在几日内有明显的变化，可见类星体的发光区大小在光日尺度以下，即使你认为类星体的光谱线产生于吸积盘，那么吸积盘的大小须在光日尺度以下才能不相矛盾，请你说出一个你认定的类星体吸积盘的大小尺度与该尺度内所具有的质量，及因此计算出的可忽略的引力红移。

"In the interior , less is more - 2 bucket seats, steering wheel, gear shifter and a control unit," Paulin continues.

"内政部长，少即是多2桶形座位，方向盘，齿轮移相器和一个控制单元，"在会上继续进行。

China shall combine the TDR and PDR under our country's situation.

我国应当结合国情实行土地发展权移转和国家购买土地发展权相结合的制度。

In phase calculate of phase-shifting interference technique,Because of the periodicity of function arctan,all the phase values are ranged over-π to π.

在移相干涉技术的相位计算中，周期函数arctan的相位值分布在之间，相位值分布的跃变形成了被压包后的波面。

The steady-state principle of constant-head well permeameter, which was used to calculate the field-saturated hydraulic conductivity, was applied to quantify the suitable emitter discharge rate for indirect subsurface drip irrigation under different water-conducting device specification conditions in this text. Using the calculated emitter discharge rate to supply water, characteristic parameters of wetted soil volume were studied during the water movement process.

该文将恒定水头钻孔积水入渗求解土壤饱和导水率的稳态原理用于定量化求解间接地下滴灌技术中与任意导水装置尺寸相匹配的滴头流量，并以计算的技术参数为基础，研究了间接地下滴灌水分运移过程中的土壤湿润体特征参数。

To make sure the petroleum migrating direction and pool-forming model in the Weixinan sag ,4 wells were chosen to do research on fluid inclusions and petrography.

为查明北部湾盆地油气运移方向及成藏模式，在涠西南凹陷选取有代表性的4口井进行储集层流体包裹体研究和系统的岩相学研究。

The oscillating frequency and oscillating condition of RC phase shift oscillating can be worked out easily.

则RC 移相式振荡电路的振荡频率及振荡条件可以容易地求出。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。