初值问题的时间积分经常采用差分近似。
Time integration of an initial value problem USES the finite difference scheme quite often.
由时间积分法建立了弦振动位移的隐式表达式。
The implicit expression of displacement of string vibration was established by the time integration method.
用此模式对地形强迫为下边界条件进行时间积分。
The time integrating of the model was carried out by taking the topography forcing as the lower boundary condition.
为了保持计算稳定性，提出了一种改进的向前向后时间积分方法。
An improved forward-backward time integration scheme is proposed for keeping the computational stability.
给出了该框架的控制方程组及其差分形式、边界条件、时间积分方案等。
The control equations, the difference expressions, the boundary condition and the time integral scheme etc. are also given.
本文作了有限区数值预报模式显式和省时显式时间积分方案的对比试验。
Comparision experiments were conducted for an explicit and economical explicit time integration scheme (EES) by use of a limited area numerical prediction model.
纵向位移是测量收缩期心肌运动幅度，显现为心肌节段的速度-时间积分。
Longitudinal displacement measures myocardial motion amplitudes in systole and visualizes the segmental velocity - time integrals.
可以通过角速率值的时间积分来估计当前的横滚角度，前提是没有误差的累积。
You can approximate the current roll Angle by integrating the roll rate over time, but you can't do so without some error creeping in.
本文给出的接触力算法既与显式时间积分格式相容，又能充分满足接触约束条件。
The contact force algorithm proposed in this paper is compatible with the explicit integration scheme, and the contact constraint conditions are well satisfied.
目的探讨体外模拟心脏运动对多普勒血流流速曲线速度时间积分(VTI)测定的影响。
Objective To investigate the influence of simulated heart motion on the Doppler spectrum velocity - time integral (VTI) of simulated blood flow measurements through an in vitro model.
通过采用预测校正二步时间积分和单元内引入坡度限制，该算法在时空上均可达到二阶精度。
Second-order accuracy both in time and space can be achieved by means of an explicit predictor-corrector scheme and slope-limiting within elements.
本文给出基于“块-网格片”的并行区域分解策略，以及建立在该基础上的并行时间积分算法。
This paper presents the two level parallel domain decomposition strategy used in the parallel program, namely, block and patch strategy, and the parallel time integration algorithm based on it.
为了克服此一困难，可以将动力平衡运动方程序对时间积分一次而转换成动量平衡运动方程序。
To overcome this difficulty, the momentum equations of motion are obtained from the time integration of force equations of motion.
本文给出基于“块-网格片”的并行区域分解策略，以及建立在该基础上的并行时间积分算法。
The theorem and algorithm of parallel resolution are presented, and the applications of method proposed are verified by an example in this paper.
实验中采用晶体谱仪时间积分和X射线条纹相机同时获取碳氢平面靶强激光烧穿厚度和烧穿时间。
The ablation thickness and time were synchronously measured with time integrated X ray crystal spectrometers and a X ray streak camera.
对废弃矿井甲烷涌出速度对时间的曲线按时间积分到无穷大，可以得到计算时刻的废弃矿井资源量。
To integrate the curve of abandoned mine methane emission rate versus time to infinity against time, can get abandoned mine CBM resources at the time of estimating.
针对多区域切比雪夫伪谱时域算法稳定性方面的问题，采用隐式和显式两种时间积分方式对此进行改善。
The implicit and explicit time integration schemes are used to improve the stability condition of the MCPSTD algorithm.
在数值技术方面，隐式积分方法被用来对本构方程的局部时间积分，动力显式技术用于求解总体平衡方程。
For the numerical aspects, an implicit integration scheme is used for local time integration of the constitutive equations and a dynamic explicit scheme is used to solve global equilibrium equations.
给出系统的时间积分等式，并由此等式导出类能量方程、类维里定理、一个积分变分原理和一个微分变分原理。
A power-like equation, a Virial-like theorem, an integral variational principle and a differential variational principle for the system are deduced by using the time-integral identity.
此外，由于模型的动力方程具有二阶时间导数项，因而应用本文模型的结构—基础—土系统可以采用显式时间积分求解。
Moreover, due to the dynamic equations of LPMs with second-order derivative terms in time, the resulting structure-foundation-soil system can be solved by an explicit time-integration method.
推导了基于NASA标准解体模型的碎片分离速度概率密度函数，建立了计算航天器与单颗碎片碰撞概率的时间积分算法。
Space debris delta-velocity probability density function was deduced by NASA's standard breakup model, and time integral algorithm of collision probability between spacecraft and any debris was built.
利用CCD图象传感器的线性积分成象特性，将数字图象处理技术与时间积分成象方法结合用于运动时间历程的光测分析。
Based upon the linear integral imaging mechanism of the CCD image sensor, this paper presents a new method for measuring the motion of a moving object.
在复杂地形条件嵌套细网格模式基础上，利用球圈模式与有限区域模式自嵌套，就三维嵌套方法在长时间积分中的模拟结果进行了初步分析。
A new nesting technique called three dimensions nesting(3DN) is used in a regional model which is nested in a circulation model based on the complex terrain with high resolution model(YH model).
建立了基于欧拉方法描述树脂传递模塑(rtm)工艺充模过程的基本数学方程，并采用有限元隐式时间积分方法对基本方程进行了数值求解。
A mathematical equation described by Euler method for simulating RTM process is established, and a finite element method with implicit time integration is used to solve this equation.
分别对开胸犬及7例二尖瓣金属瓣置换术后患者利用多普勒组织成像中的速度时间积分曲线对放置钛夹处心肌及二尖瓣环处的长轴运动位移进行定量研究；
Quantitative study was made on time velocity integral(TVI) of the implanted myocardium and left ventricular long axis in 7 canine models, and 7 patients with replaced metal mitral valve.
在这之后是游戏的分配阶段，负责分配的这个孩子会获得他和他的搭档在这项任务上花费的时间以及他们获得的积分奖励。
Afterward, in the distribution phase of the game, the dictator was given information about his or her partner's time spent on the task and the number of points that were collected.
在时间银行里，会员可以通过为其他会员提供服务来获得积分，服务范围可包括做饭、整理家务、开车接送，以及家庭维修等。
In a time bank, members get credit for services they provide to other members, from cooking to housekeeping to car rides to home repair.
我们知道电量等于电流，对时间的积分，他知道电流，他也知道时间，然后他测量这个。
We know that charge is equal to the integral of current times the time. And he knows the current, he knows how much time and then he weighs this.
这是根据电流对，时间的积分。
This is on the basis of the integral of the current times the time.
在我花了这么多时间来告诉你们，如何计算曲面积分之后，我打算告诉你们，如何避免计算它们。
After spending a lot of time telling you how to compute surface integrals, now I am going to try to tell you how to avoid computing them.
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