周期

The product is free, the service collects fees is well-known, technical support has important place in the lifecycle of a product, very simple truth, encounter in the process that you are using source product very a Gordian knot, how to do?

产品免费，服务收费众所周知，技术支持在一个产品的生命周期中占有重要地位，很简单的道理，你在使用开源产品的过程中遇到很棘手的问题，怎么办？

China is a developing country,abound with population,lack in basis,and the country is much underdeveloped.

中国的年份是以12年为周期的，每年都以一种动物命名，比如老鼠、老虎、猪和龙。2002年是充满活力的马年，人们认为这一年能给他们带来成功和收获。

First, the system looks for a slow drift in demand (Figure 5, rule 1 ). The system recognizes a slow drift in demand if there is a run of 4 or more points above or below the mean demand.

第一，系统会寻找需求曲线上的偏移（图5，rule1），一旦在某一周期内有4个或者更多的点出现在平均需求曲线以下，系统将其识别为一次偏移。

The absolute convergent interval, the absolute convergence criterion and the realization course are presented.

使用一个周期正弦波曲线模型的滑动拟合法，实现了幅度调制信号波形的精确解调。

From 1978 to 2000, there was not σ-convergence of the PGDP growth in Jiangsu province; From 1984 to 1993 and since 1999, there was not σ-convergence of the per capital net income of rural households growth, but from 1993 to 1999, there was a -convergence; From 1978 to 2000, there was not absolute β-convergence of the PGDP growth in Jiangsu province, but there was conditional β-convergence and the convergence intensity was feeble, half-lifecycle is comparative long, the least half -time of the undeveloped region will catch up with the developed region was 115 years; From 1994 to 2000, there was club-convergence hi the northern Jiangsu and the Middle Jiangsu, but there was not club-convergence in the northern Jiangsu.

第四，基于经济增长收敛的理论与方法，对江苏省区域经济发展的收敛性进行了研究。1978一2000年，江苏省人均GDP总体上不存在u一收敛；农民人均纯收入增长在1 984一1993年及1999年以后不存在a一收敛、在1993一1999期间存在a一收敛；1978-2 000年，人均GDP增长总体上不存在绝对p一收敛，但存在条件p一收敛，收敛的程度较弱，半生命周期比较长，落后区域要缩小与发达区域经济差异的一半最少也需要115年；1 994一2000年，在经济比较发达的苏南和苏中内部存在俱乐部收敛，在苏北内部不存在俱乐部收敛趋势。

A decoupling generalized predictive control algorithm was presented in this paper. This algorithm was proposed to control the temperature-humidity system of a practical air-conditioning environmental chamber. By introducing absolute humidity as an intermediate variable,temperature and humidity of the system can be decoupled.

为保证多变量控制系统长期安全而有效运行，提出一种解耦GPC控制算法，该算法通过引入绝对湿度作为中间变量，将温、湿度耦合系统进行解耦，然后对解耦后的两个系统进行不同采样周期的GPC控制律设计，给出了该算法的仿真研究结果。

Periodic signals which are neither absolutely integrable nor square integrable over an infinite interval, can be considered to have Fourier transforms if impulse functions are permitted in the transform.

若在变换过程中可以使用冲激函数，那么，在一个无限区间内，既不绝对可积，又不具备平方可积的周期信号也可以认为具有傅立叶级数。

This abstemiousness has served it well as the commodity cycle has turned.

当大宗商品周期逆转直下的时候，这些省下来的储备可以大派用场。

This acceleration corresponds to the maximum peak acceleration of the time history used to derive the response spectrum.

零周期加速度和反应谱加速度的最大峰值保持一致性。

The accelerograms of some large earthquakes recorded by digital accelerograph s are used for analyzing the features of long period component of strong ground motion.

本文利用近20年国内外大地震时获得的数字强震仪记录分析强震动的长周期分量特性，给出了不同场地上的平均加速度反应谱及其拟合曲线。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失