查询词典 time-travel

Main job is to guarantee the scraping interaction and equipment on both sides of the friction surface or can obtain higher precision and accuracy, precision and shape accuracy, precision and contact transmission because of good lubrication, manual and repeatedly is worthy, large amounts of wind, time-consuming, scraping the time needed for different devices vary, such as boring slider and slide block wind profiling, between the match before measuring clearance between the original value, and then according to the technical requirement to measure the value of time and scraping scraping, then apply DanFen red on the slider, manual let slip on the slide seat back and forth, they do straight-line movement between full contact and friction, reoccupy scraper scraping friction creates the contact point, so repeatedly, until the technical requirements for the match, single within 2 days, must blow to the boring if all the time to work with wind, a half month is required.

刮削过程。刮削工作主要是为了保证设备相互接触并摩擦的两面间能获得较高的尺寸精度、形状精度、位置精度、接触精度、传动精度和良好的润滑，因是手工操作且需反复配刮，故工作量大，耗时较长，设备不同，刮削所需时间也各不相同，例如镗床上滑座与下滑座间的配刮，刮削前先测量出二者之间原有的间隙值，然后根据工艺要求测算出需刮削值及每次的刮削量，再将红丹粉涂于上滑座之上，手工让上滑座在下滑座上来回做直线运动，使它们之间充分接触和摩擦，再用刮刀刮削摩擦产生出的接触点，如此反复多次，直至技术要求范围之内，单此项配刮需2天左右，若对于整个镗床所有配刮工作的时间总和，则需半个月左右。

The relation between the parameter of ground motion and time is transformed into a pure random process with the amplitude varying with time. Based on the concept that there is the scaling invariant fractal structure in the transmission of earthquake motion and the self-affinity of the ground motion signal in time domain, an assumption is deduced that the curve of the stationary random noise of the ground motion varying with time is a fractal graph.

将一个运动参数的时间变化过程转化为具有时变振幅的一个纯随机振荡问题，运用地震运动传递具有无特征尺度的分形结构和地运动时域信号具有统计自相似性的概念，提出地面运动随机平稳噪声的时变曲线是一条分形曲线的假设。

In the aspect of the study of the application of HHT method, This dissertation has done three part of jobs: first, the Elcentro strong ground motion which is in common use in earhtquake engineering is analyzed by HHT method, getting its amplitude-frequency-time distribution and the comparison between the HHT marginal spectrum and Fourier spectrum is also made; second, the typical nonlinear system defined by the Duffing equation is analyzed by HHT method, getting its numerical value's amplitude-frequency-time distribution and the comparison between the HHT marginal spectrum and Fourier spectrum is also made; third, define the stationary degree of non-stationary signals making use of 3-D time-frequency spectrum and marginal spectrum, the stationary degree curve of Elcentro seismic recording is protracted according to its defining formula, the stationary degree curve of Elcentro seismic recording which change with time is protracted according to similiar definition.

在HHT方法的应用研究方面，本文做了三部分的工作：首先，利用HHT方法分析了地震工程中常用的Elcentro非平稳强震记录，得到了该记录的振幅－频率－时间分布特性，并将得到的边际谱与傅立叶谱做了比较；其次，应用HHT方法分析了典型的非线性系统－Duffing方程，得到了该方程数值解的振幅－频率－时间分布特性，并将得到的边际谱与傅立叶谱做了比较；最后，利用三维时频谱与边际谱定义了非平稳信号的平稳度，并依照其定义式绘制了Elcentro地震波记录的平稳度曲线，依照类似与依赖与频率变化的平稳度定义，初步尝试编程绘制了Elcentro地震波随时间变化的平稳度曲线。

One is stationary time series, the other is nonstationary time series. In daily time we usually observe time series which is almost nonstationary especially in the phenomena of society and economic.

在实际问题中，我们经常遇到的序列，特别是反映社会、经济现象的序列，大多数并不平稳，并且呈现出明显的趋势性或周期性，因此研究非平稳时间序列的建模具有很重要的现实意义。

Some non-stationary time series can be decomposed into several approximate stationary time series with wavelet decomposition.Decomposed time series are forecasted with auto-regression model,to obtain forecasting results of the original time series.

通过小波分解可以将某些非平稳时间序列分解成多层近似意义上的平稳时间序列，然后采用自回归模型对分解后的时间序列进行预测，从而得到原始时间序列的预测值。

The disturbance model can give the prediction for all the 95 shock events, while STOA model works for 89 events and ISPM model for only 72 events. We arrive at 25.26% percentage of all the 95 events with the relative time error less than 10%, 50.53% of all the events with the relative time error less than 20%, 65.26% of all the events with the relative time error less than 30%, 31.58% of all the events with the relative time error between 60%~80

实验表明，我们的模型在所有95个事件中，渡越时间相对误差小于10％的事件数占总事件数的25.26％；相对误差小于20％的占总事件数的50.53％；相对误差小于30％的占总事件的65.26％；相对误差在30％～60％的之间的事件数有30个，占总事件的31.58％；有3个事件相对误差在60％～80％之间，没有哪个事件相对误差大于80％。95个事件中我们的扰动传播模型能对所有事件进行分析给出预报值，STOA模型能给出89个预报值，而ISPM模型则只能给出72个。

Time of the eastpart part of United States of dispatch of sina science and technology on May 5 6:30(Beijing time on May 5 18:30) message, perfect and spatio-temporal will press at time of American the eastpart part on May 18 (Beijing time on May 18) release before open quotation of American stock market up to March 31, 2009 2009 sign up for without audit money first quarter.

新浪科技讯美国东部时间5月5日6：30(北京时间5月5日18：30)消息，完美时空将于美国东部时间按5月18日(北京时间5月18日)美国股市开盘前发布截至2009年3月31日的2009年第一季度未经审计财报。

Time of the eastpart part of United States of dispatch of sina science and technology on April 16 6:00(Beijing time on April 16 18:00) message, boat beautiful medium (Nasdaq: AMCN) announces today, this company will at time of American the eastpart part on May 7 (Beijing time on May 8) release after closing quotation of American stock market without audit 2008 money signs up for first quarter.

新浪科技讯美国东部时间4月16日6：00(北京时间4月16日18：00)消息，航美传媒(Nasdaq： AMCN)今天公布，该公司将于美国东部时间5月7日(北京时间5月8日)美国股市收盘后发布未经审计的2008年第一季度财报。

Time of the eastpart part of United States of dispatch of sina science and technology on April 29 6:00(Beijing time on April 29 18:00) message, the net in sky (Nasdaq: KONG) announces today, this company will at time of American the eastpart part on May 15 (Beijing time on May 16) release after closing quotation of American stock market 2008 money signs up for first quarter.

新浪科技讯美国东部时间4月29日6：00(北京时间4月29日18：00)消息，空中网(Nasdaq： KONG)今天公布，该公司将于美国东部时间5月15日(北京时间5月16日)美国股市收盘后发布2008年第一季度财报。

Time of the eastpart part of United States of dispatch of sina science and technology on May 7 6:00(Beijing time on May 7 18:00) message, the 9th city (Nasdaq:NCTY) announces today, this company will at time of American the eastpart part on May 19 (Beijing time on May 20) release after closing quotation of American stock market 2008 money signs up for first quarter.

新浪科技讯美国东部时间5月7日6：00(北京时间5月7日18：00)消息，第九城市(Nasdaq：NCTY)今天公布，该公司将于美国东部时间5月19日(北京时间5月20日)美国股市收盘后发布2008年第一季度财报。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。