查询词典 oscillatory

The instability originated in the upper R_B-like convection zone develops to larger region with the increase of Grashof number, and the number of non-axi-symmetric circulations decreases. When Grashof number exceeds another critical value, cooling air may invade the cavity and flow toward the shroud, the circulations decrease to one pair occupying the whole cavity in radial, thus these two zones are merged into one. The core structures in the cavity rotate against the disks, while the structures keep no change at the case of periodic oscillatory flow. With the Grashof number rises, the flow undergoes stable, periodic, periodic with cool air invading, quasi-periodic and ultimately to chaos.

离心浮升力是造成非等温轴向通流旋转盘腔内流动不稳定的主要因素，而哥氏力的存在加剧了流动不稳定性，导致流场失稳提前发生，而且在哥氏力的作用下流线发生偏转，盘腔内r-θ面出现了旋向相反的对涡，流动结构更加复杂化；随离心浮升力的继续增加，r-θ面的对涡减少，当其超过某一临界值后部分冷流体侵入盘腔，对涡减少至一对，而且沿径向充满整个盘腔；此后随离心浮升力的增加对涡的数量不再变化；r-θ面的对涡相对于盘面周向移动，但是形状基本保持不变。

Simulation and dynamical analysis are performed on the cubic non-linear transit packaging system under oscillatory surroundings in this paper.

对于立方非线性物品包装系统，许多学者研究了其在不同冲击波形下的跌落响应[1 3 ] 。

With the increasing development of science and technology, There are many problems relating to differential equation derived form lots of practi- cal applications, such as whether differential equation has a oscillating solution or not, and whether all of its solutions are oscillatory or not.

随着自然科学和生产技术的不断发展，在许多应用问题中均出现了微分方程是否有振动解存在或者微分方程的一切解是否均为振动解的问题。

The oscillatory potentials of total wave and each were dropped according with the increased of dioptre.

随着屈光度的加深，震荡电位总波和各子波随之下降。

Objective To investigate the value of oscillatory potentialsin high myopia by comparing differˉent dioptre.

目的 观察震荡电位（oscillatory potentials，OPs）在不同程度高度近视眼中的变化规律，探讨OPs在评价高度近视眼视功能方面的价值。

Spessartine showing oscillatory growth of the rhombic dodecahedron and the trapezohedron.

表现出在菱形十二面体和偏方三八面体之间摆动生长的锰铝榴石。

When the current has a small oscillatory component the dyn amical system becomes non-autonomous, chaos is now possible.

假如环境流具有一个小振动分量，动力系统成为非自治的，则将发生混沌现象。

The detailed analysis of the dynatron which is the main noise source in the oscillatory circuit is also made, including how excitation affects the dynatron and crystal.

依据晶体管放大器的噪声模型分析合理选择了低噪声的元器件，对降低相位噪声和相位抖动的方法作了一些探讨。

Competition of different frequency oscillation often yield resonance in some positions of the human body so as to form "oscillatory network" and "strange point" with the electromagnetic and chemical oscillation circulating dominant position in the body, which is possibly meridians and acupoints with regulative actions.

不同的振荡之间相互竞争，往往会在机体的某些部位引发共振，从而形成具有电磁和化学振荡传输优势的"振荡网络"和"奇点"，它可能就是最具调整效果的经络和腧穴。

In the tidal estuary, the current is complex, and the flow is oscillatory.

研究了潮汐河口随时间及空间变化的垂向紊动混合规律。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。