相比其它采用脉动型的驱动源,具有调节精度高、响应速度快等优点。
Compared with other driving sources adopting a pulsating type, the testing device has the advantages of high adjusting precision and quick response speed, etc.
造父是种特殊的恒星,它能以可以预测的方式周期脉动,就像I型超新星,他们被当做是一样的,不管他们在那里。
Cepheids are a special type of star that pulsates in a predictable way, and like the type 1a supernova, they are assumed to be the same, no matter where they are located.
利用脉动法对-试验工程进行了动力特性测试,得到了该结构的固有频率和振型。
The dynamic characteristics of an experimental structure were tested by means of pulsating method and frequencies and modes of structure are gained.
为了记录短周期地磁脉动,我们研制了81型照相记录感应式地磁脉动观测系统。
We have made a system of optically-recording induction magnetometer of 81-type, for micropulsation observations along Eastern Coast of China.
文中提到了对这种瓣型的定常流和脉动流试验。
Results of steady flow and pulsed flow tests are shown as well as the experimental apparatus used.
为了选取大跨屋盖结构脉动风振响应的主导振型,提出了振型能量参与系数及其累积参与系数的计算方法。
The mode energy participation factor and the cumulated factor are presented in order to identify the dominant modes of fluctuating wind-induced response for a large-span roof.
结果表明:各个参数对密度波型脉动界限值的影响规律与实验值是一致的。
The results of the calculation indicate that the law governing the impact of various parameters on the density-wave type pulsation limit values is in agreement with that of the experimental values.
具“S”型花岗岩的特征,互相呈脉动侵入接触关系,形成于板内同造山期的环境。
It has features of "s" granite and as pulsation intrusion contact and formed the intraplate synorogenic period setting.
应用脉动法测到的信号分析结构的固有频率和振型,利用作者提出的改进的单纯形法来识别结构刚度。
The frequencies and vibration modes of structures are analyzed with pulsating method and structural stiffness is identified with modified simplex method, which is presented by authors.
根据两相流的均相模型,对压力降型脉动的周期和振幅进行了数值计算。
Based on the homogeneous model, the numerical computation for the oscillation period and amplitude of pressure drop type instability was conducted.
在该项研究的实验条件下,已经观察到压力降落型脉动和热力脉动。
Under the experimental conditions of the study, pressure - drop type oscillation and thermal oscillation have been observed.
通过对北京地区八幢建筑物脉动信号的分析,研究了考虑地基与结构相互作用的影响时,体系基本振型的特点。
The characteristics of the fundamental mode of vibration of soil-structure interaction system are studied through the analysis of experimental results of eight building structures in Beijing.
设计电压型PW M变频器时死区时间的设定会造成输出谐波增加、负载电动机转矩脉动,严重时甚至引起电动机震荡。
In the design of voltage PWM inverter, the existence of dead-time will arouse the in-crease of output harmonic, the pulsation of the motor torque, and even the oscillation of the motor.
还发现,单纯型病变在经皮腔内冠状脉动脉成形术后,很少发生再狭窄,但复杂型则常发生再狭窄。
Authors also found that restenosis after PTCA was rare in simple coronary lesions, but then it was common in complex coronary lesions.
本文应用自适应最小二乘格型(LSL)算法估计非恒定流压力脉动的功率谱密度。
This paper uses the adaptive least squares lattice algorithm (LSL) to calculate the spectral estimation of pressure fluctuations in unsteady flow, and describes the principle of the LSL algorithm.
建立WW B型脉动式无级变速器的几何模型。
Firstly, the geometry model of WWB Impulse stepless speed variator is presented.
本文提出了描述并联沸腾管内两相流密度波型脉动的线性均相模型。
This paper presents a linear homogeneous model describing two-phase flow instability.
本文以GUSA型脉动减速器为例,分析说明多相并列杆机构系统的动力学分析计算方法。
This paper introduces a method of dynamic analysis of polyphase parallel connected linkage by means of the analysis of GUSA-a linkage impulsive stepless speed regulator.
另一可能就是心上型完全性肺静脉异位连接或者Galen静脉动脉瘤样畸形的脑部循环流量增加。
Another possibility is an anomalous pulmonary venous return with a supracardiac connection or increased circulation of the brain, as found in a vein of Galen aneurysm.
研究了一种新型的水下焊接系统。系统中弧焊电源输出阶梯型的外特性,送丝系统采用脉动送丝方式。
A new type of underwater welding system is studied, which includes an oscillating wire feed system and a welding power source with staircase external characteristic.
使用集总参数非线型模型来分析蒸发管中汽液两相流压力降型脉动,结果表明:压力降型不稳定性可以用二阶常微分方程来描述。
The pressure drop pulsation is analyzed by using a lumped parameter nonlinear model. The results show that the pressure drop type instability can be described by a second-order differential equation.
该加法器适用于复合型加法运算,优于脉动进位加法器和超前进位加法器。
The prefix tree adder is useful in compound adder implementation. It is preferred over the ripple carry adder and the carry lookahead adder.
型脉动真空灭菌柜为自动程序控制,兼有脉动真空与快速喷淋冷却功能。
The autoclave type XG1-H has automatic programmed control and functions of both pulsating vacuum and rapid shower cooling.
它是GUSA型脉动式无级变速器的改进。
高频脉动属于声波型脉动,低频脉动属于密度波型脉动。
It is shown that the flow instability with high frequency belongs to acoustic oscillation and the flow instability with low frequency is density wave instability.
高频脉动属于声波型脉动,低频脉动属于密度波型脉动。
It is shown that the flow instability with high frequency belongs to acoustic oscillation and the flow instability with low frequency is density wave instability.
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