查询词典 oscillation function

In this paper, the oscillation of forced neutral difference equations with positive and negative coefficients is studied and two sufficient conditions of this equation to be oscillatory are obtained.

研究了一类具有强迫项正负系数中立型差分方程的振动性，获得了方程振动的两个充分条件。

Based on the data from forced oscillation tests of rigid cylindrical sections,many empirical tools were developed.

近年来出现的若干经验模型基于圆柱体受追振荡实验数据。

It was found that the forced thermo-acoustic oscillation had much lower critical temperature for initiation and the minimal temperature was only 60℃.

系统的最低起振动温度约为60 ℃。

A forced vibration is the oscillation of a body under the action of an external disturbing force.

强迫振动：在外加激振力作用下的振动。H—力幅；—激振力的圆频率；—激振力的初相位。

Forced oscillation test results of rolling table show that the theoretical anal

本论文的研究成果和结论对于U型减摇水舱的设计及试验摇摆台的仿真具有重要的指导意义。

Respiratory effective resistance and compliance are measureed by the forced oscillation technique in 75 patients with chronic obstructive pulmonary diseases.

用强迫振荡法测定75例慢阻肺患者的呼吸系统有效阻力和顺应性。

Forced oscillation is a convenient, quick, and noninvasive new method when applied to measure airway resistance and phase angle.

强迫振荡法是一种简便、快速、无创性测定气道阻力与相位角的新方法，适用于重症慢性阻塞性肺疾病患者，且对哮喘的用药观察优于传统肺功能测定。

In this paper,by using the characteristic equation,some forced oscillation of certain delay hyperbolic differential equation s are obtained.

借助其特征方程，获得了一类时滞双曲型微分方程解的强迫振动的若干充分条

The measurements were performed simultaneously by using a vibrating-wire instrument operating in the forced mode of oscillation.

采用振动弦黏度/密度计对碳酸二乙酯的黏度与密度进行了实验研究，测量的温度范围为263～363 K，压力范围为0.1～20 MPa。

The forces and moment for the model advancing forward with forced heave and forced pitch oscillation, and the hydrodynamic mass and damping coefficients for heave and pitch motion of the model are given. The results of numerical simulation are compared with the experimental data from Delft University of Technology, and show good agreement with them.

文中给出了以不同航速前进的船舶强制垂荡和纵摇的力与力矩，以及船舶垂荡和纵摇的附加质量系数和阻尼系数，并与DUT的试验数据进行了比较，二者吻合良好。

Molecular Distillation is a kind of high vacuum distillation method, which is suitable for the separation of high boiling, heat sensitivity and viscidity products.

分子蒸馏技术是一种在高真空条件下进行的连续蒸馏过程，适合于分离高沸点、热敏性及具有生物活性的混合物。

They are to the Noughties what yuppies were to the Eighties .

那在六十年代是时髦的，但在八十年代肯定是过时了