滞后

And this course of change of water level of steam dome caused to perturbation of water flow can pass experiment test and receive the accurate mathematics model with data processing , can design the routine controller to control like this, and can reach very good result.

并通过常规三冲量PID仿真与模糊控制仿真进行了一系列对照，结果证明对于那些过程复杂，具有时变性和明显滞后以及难以取得精确的数学模型的系统，模糊控制比传统的三冲量控制更容易实现全自动并且控制作用相当有效。

In the frigid zone, such as Heilongjiang, Jilin and the northern part of Inner Mongolia Autonomous Region, automatic stage recording platform can not be used to get telemetric data during the flood period of spring and early summer because of long winter and low temperature, which extremely decrease the effective application of automatic stage monitoring system.

在我国的黑龙江、吉林及内蒙古北部等高寒地区，冬季漫长，气温低，水位自记平台融通时间滞后河流开河日期达1~3个月以上，导致春汛或部分夏汛时间无法使用水文自动测报系统来自动采集水位遥测数据，不能真正满足水文为防汛抗旱工作服务的需要。

The tree α-cellulose δ^13C time series from 1835 to 1997 was obtained based on cross-dating tree rings age from the Tianmu Mountain, Zhejiang Province. After removing the long-term decrease trend, which is related to atmospheric CO2 concentration of the δ^13C series, we analyzed the correlation between the δ^13C and the flood/drought index of different periods. The results suggest that both the same year and the next year tree ring δ^13C are distinctly related with the spring and summer drought indices, showing that the δ^13C better responsed to the spring and summer flood/drought.

对采自天目山的柳杉树轮进行交叉定年后，测得树轮的δ^13C年序列，将δ^13C去除大气CO2趋势影响后的高频变化与不同时段的旱涝指数进行相关分析，结果显示：春夏季的旱涝指数与当年和滞后一年的δ^13C序列有着比较显著的相关性，表明树轮δ^13C对春夏季旱涝的发生有着比较好的响应。

By using dynamics analysis software RecurDyn to establish a model for the prototype of a belt conveyor, this essay reaches through simulation research the conclusion that during the initial startup phase, it is necessary to maintain a lag between the speed of the tail pulley and that of the head pulley, mainly because it takes a certain amount of time for the elastic wave to travel through the belt to reach the tail of the conveyor.

应用动力学分析软件RecurDyn建立了带式输送机的样机模型，通过仿真研究，得出在起动初始阶段，尾部滚筒速度要滞后于头部滚筒速度一定时间，这主要是由于弹性波在输送带中进行传播到达尾部需要一定的时间；并且在起动阶段，输送带的张力比稳定运行时变化大，起动时间越长，输送带出现的最大张力越小。

The influence of the lagging characteristics of CVT ratio control on the drivability and fuel economy of the automobile were studied.Based on the routine control strategy,the rotate speed signals of the secondary pulley were corrected, the algorithms of the objective ratio were perfected, and the departure of the engine operation from the optimal operation line was decreased.

分析了金属带式无级变速器速比控制的滞后特性对汽车燃料经济性和驾驶性能的影响，在常规控制策略的基础上，增加了对从动轮转速信号的修正，完善了目标速比控制算法，以减小发动机工作点相对最佳经济工作路线的偏离程度。

The main results are:(1) The cumulate cause-effects model was demonstrated at both macro and micro level data. The problem of data fitting of hypertension prevalence data was solved well enough with the cumulate cause-effects model. The parameters of the model were meaningful for the practice.(2) Taking the hypertension developing speed as an indicator of health equality of hypertension between urban and rural residents in China and discovered the macro level determinants of it.(3) The causal network was testified by the structure equation model.(4) It is found that the major determinants of hypertension prevalence in China is population ageing, overweight, lifestyle changing due to high economic developing speed and the lagging behind of health education.

主要的研究成果有：(1)首次观测到我国高血压的患病率曲线符合累积风险效应模型，解决了高血压患病率资料数据拟合中长期存在的方法学问题，并对模型中参数的实际流行病学意义给出了合理的解释，能够对疾病的发病率进行间接的估计；(2)提出了用高血压的发展速度作为衡量我国城乡高血压造成的健康不平等的重要指标，解决了我国高血压患病率评价中长期存在的一些错误性认识，揭示了我国高血压城乡发展不平衡的宏观决定因素；(3)利用结构方程模型对构建的网络模型进行拟合分析，证明了模型的有效性；(4)揭示了目前影响我国高血压发展趋势的决定因素，主要包括人口老龄化趋势加剧、超重人口比例增加、经济的快速发展带来生活方式的转变和健康教育的相对滞后等几个方面。

The porous silica with nanofibrous morphology produces a high surface area of 391.8 m2/g and total pore volume of 1.05 cm3/g. The characteristic of hysteresis loop are mainly of slit-shaped pores.

纳米纤维状多孔氧化硅比表面积为391.8 m2/g，总孔容为1.05 cm3/g，由吸附脱附等温线的滞后回线特征判断其结构中的孔主要为缝隙型孔。

Include an electron to trade among them devoid level or the standard is skimble-scamble, traditional content sheds course of study to develop lag, the security that Internet receives and confidential sex are insufficient, legal laws and regulations is diseased related electronic business affairs wait.

其中包括电子交易缺乏标准或者标准不统一，传统物流业发展滞后，互联网接入的安全性和保密性不足，电子商务相关法律法规不健全等。

China's pension service undertaking has developed somewhat in recent years but has been unable to match the situations of accelerating aged population and growing demand for social pensions. Shortage of pension resources, low service level and outdated service mechanisms have become the three main factors restraining the development of China's pension service industry.

近年来中国养老服务事业有所发展，但与老龄化加速、社会养老需求不断增长的形势不相适应，养老资源紧缺，服务水准低下，体制机制滞后已经成为制约中国养老服务业发展的3个主要因素。

The paper also study the variable control of uncertain system and the variable control of time lag system. At last adopt this discrete approach law in Series-wound Active Power Line Conditioner control.

同时对不确定性离散变结构系统和时间滞后不确定系统进行了分析；最后用离散变结构控制方法对串联型有源电网调节器进行控制。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷