查询词典 phase transformation

In this paper,a design method of two dimensional Linear Phase Nearly Perfect Reconstruction filter banks based on a new class of cosine modulation systems is presented,which can be described as follow: firstly,the Parks-McClellan algorithm is adopted for designing the prototype filter,then by employing cosine modulation,a series of analysis and synthesis filters can be obtained,accordingly a one-dimensional LP-NPR filter banks can be constructed;Secondly,cascading two one-dimensional LP-NPR filter banks in the form of tree structure and using the unimodular transformation,a two dimensional nonseparable LP-NPR filter banks can be obtained.

提出了一种基于一类新余弦调制系统的二维线性相位-近似完全重构滤波器组的设计方法，设计过程分为两个步骤：首先采用Parks-McClellan算法来计原型滤波器，再经过余弦调制能到一系列的线性相位分析和综合滤波器，从而可以构造一维LP-NPR滤波器组；然后利用树状结构来结合两个一维LP-NPR滤波器组，并运用单位模变换，可以得到二维不可分离LP-NPR滤波器组。

Take full account of the new sections of road to airport planning and coordination, as far as possible around the power to avoid a number of important facilities and buildings, then the original starting point for North and South Airport Road, north along the river channel distribution, the end of Station Road in the South and水泊provincial highway 804 phase, line length of 1763 meters, the road净宽24.5 meters, two-way four-lane, according to a standard design the construction of the road;水泊transform large sections of Interchange Interchange ramp and a long range of 1000 meters of the 804 provincial highway, the section of the transformation works for Covering 44,000 square meters of the road.

新建路段充分考虑路线走向与机场规划的协调，尽量绕避一些重要的电力设施和建筑物，起点接原机场南北路，向北沿河道展布，终点在大水泊公路站南与804省道相接，线路总长1763米，路面净宽24.5米，双向四车道，按一级路标准设计建造；改造路段为大水泊互通立交匝道和立交范围内长1000米的804省道，该路段改造工程为44000平方米的路面罩面。

At first, preprocessing with the image pyramid and diffusion-filtering technology; then abstracting the boundary-outline information; carrying on the logarithmic coordinate transformation of the abstracted boundary-outline information to get bar chart of the logarithmic coordinate; calculating the value of Cs to get all the phase match points; calculating the value of the degree of approximation to judge the shape matching.

本发明涉及一种基于Shape Context的人脸形状匹配方法，首先采用图像金字塔及扩散滤波技术进行预处理；再利用Canny边缘检测算法和轮廓提取算法提取边界轮廓信息；对提取的边界信息进行对数极坐标变换，得到对数极坐标直方图；通过计算Cs值，获得所有相匹配点；计算相近似度值，进行形状匹配判断。

To β-Si3N4 transformation and β′-Si3N4 grain growth as well as the devitrification and crystallization of amorphous phase may induce the fiber reinforcing effect, which affects the flow behavior of superplasticity for Si3N4 ceramics.

在Si3N4和Sialon陶瓷的超塑性变形中，α→β-Si3N4的相变以及β-Si3N4的长大和晶界玻璃相的析晶引起的纤维强化，将影响Si3N4陶瓷超塑性的流变特性。

Also we use the time-dependent SU (2) gauge transformation to diagonalize the Hamilton operator, obtain the berry phase and analytically the time-evolution operator. The particle number difference of species A between the two wells is studied analytically.

此外我们还研究了在双阱玻色-爱因斯坦凝聚中纠缠态的演化，研究发现随着组分间相互作用和随穿率的比值的增加系统演化到Bell态的概率变大，而且组分自身内在的相互作用对形成Bell态的几率没有影响；并且用含时Su（2）规范变换对角化哈密顿量得到了系统的Berry位相和时间演化算符，并研究了量子随穿过程。

The zeolite-based adsorbent with crystallinity and purity was synthesized by self-transformation of coal gangue in vapor phase of ethylamine and water at a range of 373K-400K,and the preliminary study on its adsorption feature was made.

研究了373-400K温度范围内，煤矸石在乙胺和水的蒸汽相中自转变合成纯度、结晶度均较高的沸石基吸附剂的过程，并对其吸附性能作了初步研究。

The fly ash-based adsorbent with high crystallization and purity were synthesized by automation transformation of fly ash in vapor phase of ethylamine and water under the temperature range of 3730K to 4000K.

以电厂的废弃物粉煤灰为原料，研究了373~400K温度范围内，粉煤灰在乙胺和水的蒸汽相中自转变合成了纯度、结晶度均较高的粉煤灰吸附剂的过程。

According to the analytical expression, the phase grating of periodic and non-periodic system is calculated and the result keeps good agreement with that by fast Fourier transform, and the computation time is reduced up to 7 times comparing with fast Fourier transformation which is important to realize monitoring in situ in modern high-resolution technique.

3由以上解析式计算得到的晶体和非晶体的相光栅结果与快速傅立叶变换的结果一致，且能有效地缩短计算时间，这对于实现现代高分辨象的实时监测是很有意义的。

Through the Radon transformation of the normally ordered Wigner operator we introduce two mutually conjugate intermediate coordinate- momentum representations. Based on them we construct the appropriate quantum phase space theory which includes the new Wigner operator adapting to this space and construct the appropriate generalized Fredholm operator equation and then find its solution. We then deriving the Hermite polynomials operator identities by applying the Fredholm equation. We also reveal the connection between the generalized Wigner operator and the 2-dimension normal distribution in statistics, which is useful to study the quantum tomogram. As the application of the entanglement Husimi operator theory we calculate the Wigner function and the Husimi function of the one- and two-mode combination squeezed state , study their characters through drawing the three-dimensional graphics.

由正规序Wigner算符的拉登变换引入了两个互为共轭的中介坐标-动量表象，在此基础上我们建立了相应的量子相空间理论，其中包括引入适合该空间的新的Wigner算符；并在该表象的基础上，建立了广义Fredholm算符方程，求出了它的解，并运用该方程导出有关厄米多项式的算符公式；揭示广义Wigner算符与统计学中的随机变量的二维正态分布形式上的相似，这对于研究量子态的tomogram(是英文Tomography的派生词)有用。

The experiment results show that the functional transformation reaction of polymers can also be conducted via phase-transfer catalysis successfully.

当以十六烷基三甲基溴化铵为催化剂且以甲苯为有机相时，反应效果最佳，反应温度为50 ℃时，反应8 h氯甲基的转化率可达到87%。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。