查询词典 time space

To find one's bearings within such boundless space and time in life and to grasp oneself........

寻找自己在辽阔的时间和空间中的生命的坐标，把自己抓住

And we show that random walk model converges to the stable law of Lévy-Feller advection-dispersion equation by use of a properly scaled transition to vanish-ing space and time steps,We propose an explicit finite difference approximation for Lévy-Feller advection-dispersion equation.

第三章讨论描述服从某种稳定分布反常扩散的非对称空间分数阶对流-扩散方程——Lévy-Feller对流-扩散方程，首先利用Fourier变换和Laplace变换给出方程的基本解，然后利用Grünwald-Letnikov分数阶导数移位离散算子离散方程中的Riesz-Feller分数阶导数得到离散格式，证明此格式可以解释为离散随机游走模型，并且证明了当时间和空间步长以一定的比率同时趋于0时，所提出的离散随机游走模型收敛到Lévy-Feller对流-扩散过程的稳定分布。

College of Guandong Business, Guanzhou 510320, China）Abstract: Since large-scale vertical quench furnace is voluminous, whose working condition is a typically complex process with distributed parameter, nonlinear, multi-inputs/multi-outputs, close coupled variables, etc, dynamically decoupling control algorithm of temperature distributed parameter system in the furnace was presented, by which the whole system was decoupled to several subsystems and the implementation of controller was simplified. With finite difference approximation, the space and time step size was solved to ensure the convergency of finite difference approximation. After decoupling, the subsystems were controlled with self-learning PID control algorithm. The results show that the temperature control precision and homogeneity are improved; the overshoot and process in temperature rising period are reduced simultaneity.

摘 要：针对大型立式淬火炉体积庞大，工况复杂，炉内温度分布呈本征非均匀性，具有多输入/多输出、非线性、强耦合等特性，难以实现炉内温度高精度高均匀性控制目标等问题，提出一种温度分布参数系统动态解耦控制算法，其原理是：采用有限维逼近方法将对象解耦为多个独立的子系统，简化控制器的实现过程；通过分析有限维逼近方法的收敛性，获得保证收敛性的空间和时间步长应满足的条件；解耦后的子系统采用自学习PID控制算法，实现炉内温度高精度和高均匀性控制以及升温过程的快速性和小超调。

It is quite possible that space and time are finite.

很有可能空间和时间是有限的。

For the first time, I had a first-hand experience with the concept of "a large space".

我对大的空间概念第一次有了具体的体会。

In single time, in which space is flat and distance vanishes.

进行，在那里空间是扁平的，距离消失不见。

"If you drive, has flextime affected the amount of time it takes of finding a parking space?"

如果你自己开车，弹性时间影响到花在找停车地方的时间吗

All my time until I die, we'll float in space just you and I

直到我死前的所有时间，我们会在太空中漂浮，就你和我

Results showed that when spraying WAHW by a mechanical fogger in an indoor space without obvious contaminations, the WAHW could disinfect microbe by a significant level only over a specific period time.

由上述结果显示，以机械喷洒雾化之次氯酸水的方式，在一个没有明显污染源的条件下，次氯酸水的应用似乎可以对某一段特定时间内微生物浓度的改善，可达到预期的杀菌效果。

This time in Taipei, Li Hui uniquely abandoned his former way of presenting laser works by using concrete objects. Instead he emphasizes on the unique characteristics of laser light itself, such as the reaction between laser lights and smokes created by the fogger, how laser lights disappear in space due to the density of the air and furthermore how the audience reacts to the laser lights.

这次在台北，李晖放弃先前利用实体物品呈现雷射作品的方式，改而强调雷射光束本身独一无二的特性，例如，雷射光束及烟雾的相互作用，雷射光束如何因为空气密度的变化而在空中消失，以及观众对雷射作品有什麼反应。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。