振动型

The density and viscosity were measured by a vibrating densimeter(model DA-505U) and a Ubbelohde suspended-level viscometer at atmospheric pressure for ethyl crotonate + ethanol,crotonic acid + ethanol.

在常压下利用DA-505U型振动管密度仪、乌氏毛细管粘度计测定了巴豆酸乙酯-乙醇、巴豆酸-乙醇两个体系的密度和粘度。

Using X100-10 high gradient permanent magnetic separator, the dry separation experiments of fine coal were completed, the desulphurization and deash rates achieved 55.52% and 64.41%, respectively.

采用X100-10型永磁振动高梯度磁选机进行了煤粉的磁选试验，脱硫率和脱灰率最高达到55.52%和64.41%，磁选试验脱灰效果明显。

The fre-quency equations are derived according to stress match, consid-ering gear as a thin bar and adopting exponential horn. Then the influences of vibration of transformer which consists of horn and gear are explored, which come from the length of horn and the machining frequency. It has been discovered that the reso-nance frequency of the horn is the detune one of transformer and the resonance frequency is not same as one of horn, which provide theoretical rules for transformer design.

鉴于此，根据应力耦合，将齿轮作为圆盘，采用指数型变幅杆，推导频率方程，对变幅杆的设计长度和变幅器振动频率进行数值分析，发现变幅杆的共振频率恰好是变幅器的失谐频率，变幅器的共振频率与变幅杆的固有频率也不相同，这能够为超声珩齿变幅器的设计提供理论依据。

Active vibration control to flexile plate were done, to prove calculated results and compare results of speed rate feedback and that of LQG. It is shown that LQG control could suppress more modes.

设计并实施了薄板型结构的振动主动控制试验，验证了计算结果并对速率反馈和最优反馈两种控制方法做了比较，结果表面最优控制比速率反馈对多阶模态的控制效果更好一些。

Followingly, an interfacial acoustic pressure level at a certain point on the vibrating plate is found with this equation.

以脉动半球声源和固定圆板的一阶振型假设为基本物理模型，导出了不同频率下的振声转换公式，由此求出振动板上某一点处的界面声压级。

The article introduces the structure and property of GZF type high frequency and librate bag filter with opposite inhale cleaning dust , analyses the exsiting problems in practice , and point out two plans of improving its function .

通过介绍，分析GZF型高频振动反吸清灰袋式除尘器的结构，原理及在实际运行过程中存在的问题，提出了二种对其性能改进的方案。

In the paper, a series of metallorganic compounds have been studied by the quantum-chemical calculation with proper basis sets, including:1. a series of carbonyl complexes.2. dibenzene chromium and its derivatives3. ferrocene and its derivatives4. a series of metallic complexes with acetylacetoneWe optimized the geometric configurations of a series carbonyl complexes including Ni4 Fe5, Cr6 with density functional theory B3LYP method at the different levels and confirmed the stable geometry by vibrational analyses. Then we calculated the nuclear magnetic resonance spectra with GIAO method provided by GAUSSION98 program at the different levels.

本文用量子化学计算程序，用密度泛函B3LYP方法，在恰当基组水平上，用GAUSSIAN98程序提供的GIAO方法研究了系列金属有机化合物的核磁共振谱：一、羰基配合物系列：二、二苯铬及其衍生物系列：三、二茂铁及其衍生物系列：四、乙酰丙酮的配合物系列：我们用密度泛函B3LYP方法，在不同基组水平上对第一过渡系羰基化合物的系列配合物进行了结构优化，通过振动分析确定其稳定构型，然后再用密度泛函B3LYP方法在不同基组水平上，用GAUSSIAN98程序提供的GIAO方法计算其核磁共振谱。

Firstly, achieving a new low and high cycle noninterfering loading, the high frequency induction local heating, the control of high cycle vibration frequency and amplitude, and the crack propagation real-time detection, an experimental system of L-HCCF at elevated temperature is established. Secondly, under two vibration frequency (50Hz and 100Hz), the contrast experiment of light and serious corrosion disc slots is done. It is found that the experimental L-HCCF life of serious corrosion disc is less than that of light's, but its dispersion is larger, and the experimental failure is identical with the service's.

首先，进行大量试验工作，提出了高低周疲劳载荷的新型加载方案，并解决了高频感应局部加温、振动调频及裂纹实时监测等多个技术难点，建立了涡轮盘全尺寸高温复合疲劳试验系统；验证试验做到了故障再现；接着进行了两种频比（振频50HZ与100HZ）的轻、重腐蚀盘的对比试验；由对榫槽第一齿进行裂纹实时跟踪，得出了枞树型榫槽的复合疲劳裂纹扩展特点规律；对榫齿断口进行的金相分析表明：裂纹首先由第一齿开始，断口系复合疲劳；试验结果显示：重腐蚀盘试验寿命较轻腐蚀盘有显著的下降，而且分散性较大。

Quasiequilibrium measurement of both vibrational spectra and desorption isotherms are presented for NH〓 overlayer on Ag surface with the substrate temperature higher than NH〓 condensation temperature.

利用光声振动谱能够在较高暴露气压下测量的特点，本文研究了120K清洁和预吸附氧Ag表面上，处于吸附和脱附动态平衡之中的物理吸附态NH〓分子的吸附构型。

The minute random variation of the incident angle around the structure angle of air-gaped Glan-type polarizing prism gives rise to the perturbance found in the experiment.

实验中空气隙间隔格兰型棱镜的振动引起入射角在棱镜的结构角附近作微小变化，从而导致了透射光强的扰动。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。