相位

There is abrupt phase change in nonsinusoidal waves modulation. It can easily produce impulse current and bring large difficulty to high-power emission system; so it is not beneficial to holding the orthogonality between the orthogonal pulses and demodulating information.

非正弦波调制信号存在相位突变，在工程实践中易产生较大的冲击电流，给大功率发射系统带来较大困难；而且相位不连续也不利于保持正交脉冲间的正交性，不利于信息的正确解调。

A new mathematical model is put forward numerically to simulate the wheel ovalization.. In the numerical simulation, the dynamic model of a half railway vehicle coupled with a tangent track is employed. Using the new numerical method investigates vehicle-track coupling system dynamic responses including lateral and vertical displacement of wheelsets and the vehicle, lateral and vertical vibration acceleration of the track at different phase angle of the two side wheels of the same wheelset, which are compared with that of the traditional model. The numerical results show that the discipline and frequency of dynamic responses are accordant, amplitude and phase of lateral dynamic responses are different. It is concluded the traditional track geometric irregularity excitation model does not simulate the effect of periodic wheels ovalization on vehicle-track coupling system dynamic behavior truly, the new model is more accurate and reasonable.

本文研究了车轮二阶周期性非圆化—椭圆化，建立了一个新的模拟车轮椭圆化的数学模型，结合车辆－轨道空间耦合动力学模型，计算了同一轮对左右车轮不同相位和车轮椭圆度下轮对和车体的横、垂向位移，钢轨横、垂向振动加速度，并与传统模型计算结果作了对比，分析表明两种模型的动力响应变化规律和频率一致，但横向动力响应幅值和相位均存在不同程度不可忽略的差异，因此传统的轨道几何不平顺激励模型不能真实模拟车轮的周期性椭圆化对车辆－轨道耦合动态行为的影响，而本文模型更能反映实际椭圆车轮与钢轨接触情形，计算方法准确而合理。

The calculating results are compared with the test data in available literatures and FEM results. The research results show that the plastic hinge model is precise and correct, which can satisfy with the actual engineering demands. The collapse pressure of perforated liner casing decreases with phrase angle, initial ovalization and diameter-thickness ratio increasing, and increases with the yield stress. The phrase angle and initial ovalization have greatly influence on the collapse pressure. The collapse pressure of perforated liner casing is slightly changed with the diameter and density of perforation when the diameter and density are smaller than 12mm and 120 shots per meter, respectively.

计算结果表明：筛管抗挤强度的塑性铰模型具有很高的计算精度和准确度，可以满足工程实际需要；筛管抗挤强度随着射孔相位角、径厚比和初始椭圆度的增加而降低，随着屈服强度的增加而增加，相位角和椭圆度对筛管抗挤强度影响比较显著；在射孔直径小于12 mm、射孔密度小于120 孔/ m 时，筛管抗挤强度随射孔直径和射孔密度增加变化不明显。

This article introduced the conception and structure of virtual instrument and presented a new kind of digital phasemeter based on virtual instrument technology.

介绍了虚拟仪器的概念及虚拟仪器的形成，提出一种新型的数字相位计——基于虚拟仪器技术的数字相位计。

Starting with the crystal optics theory, the phase change, generated by photoelastic effect, is derived.

详细研究了相位调制型波导传感器的传感机理，分析了应力应变效应和温度应变效应引起的相位变化机理。

As two clocks precess in phase, problems may occur at only one phase relationship.

两个时钟产生相位，问题也许就出现在相位关系上。

Besides the main significators, Lilly tells us to consider the Sun as a general significator for the man and Venus as a general significator for the woman. Some texts, such as the 16th century work of Dariot, also advise using the planet from which the Moon has last separated as a co-significator for the querent and the planet to which she next applies as a co-significator for the quesited.

除了主要象征星，Lilly认为应以太阳代表所询问的男性，金星为所询问的女性，16世纪的Dariot则建议使用月亮刚离相位的行星，作为询问者的次要象征星，而月亮将要入相位的行星为被询问者的次要征象星。

Study on the rotative invariance in the phase encrypted image and the phase-ring decryption.

光学图像相位加密中旋转不变性的实现及环形相位解密。

Study on the rotative invariance in the phase encrypted image and the phase-ring decryption. Chin. J.

光学图像相位加密中旋转不变性的实现及环形相位解密。

I also mentioned this septile in an earlier article, having been taken with Robert Wilkinson's name for it: the aspect of "grand irrationality."

去年初我曾在文章中提到过这个7分相位，还曾引用过罗伯特威尔金森对这一相位的定义：&巨大的非理想&。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷