The reliability of analysis result depends largely on the in-house experimental conditions. Unlike the previous analysis that only concerns the sole effect of permeable pressure, this article considers both permeable and confining pressure and deformation characteristics of concrete material under the interaction of them according to the real work state of construction, which may leads to the changing pattern of permeable rate as listed below: permeable rate always reaches its peak with the time process going on, than goes down and remains straight on some certain value; The PR will tend to decline while the confining pressure is increased, and the time taken before the peak will be extended as well; Under the constant permeable pressure and circularly changing confining pressure, the minus-exponential ascend and descend relationship could be applied between the PR and Time axes respectively with crannied and intact concrete samples, and the PR of crannied concrete is far more larger than that of intact concrete. The change pattern of concrete could also be mathematically analogized using the least square method.
室内的实验条件是研究成果可靠性的重要因素，而以往的研究都只考虑了渗透压单一作用，本文根据混凝土结构的实际工作状态，同时考虑了围压与渗透压共同作用下的混凝土材料的渗透性变化特征，得出了混凝土材料在围压作用与渗透压共同作用下的渗透率的变化规律：渗透率都是随时间推移先达到一个峰值，再降低并趋于平稳；渗透率会随围压的增大而减小，并且峰值的到达时间也会随之延长；在渗透压不变，围压升降循环的情况下，有裂缝、无裂缝混凝土的渗透率变化规律是随时间成负指数关系上升、下降，且有裂缝混凝土试件的渗透率远远高于无裂缝混凝土的渗透率，并对混凝土的变化规律运用最小二乘法进行数学拟合。
The decomposition data fitted a double exponential first-order decay model, which suggests that the DOC was comprised of tow fractions: a rapidly decomposable fraction with a turnover time of 1 day and a slowly decomposable fraction with a turnover time of about 400 days.
棕壤溶解性有机碳分别由降解速率不同的两个库组成：周转时间在1d的易分解部分和周转时间大约为400d的难分解部分。
Proliferation experiment: transformed endometrial glandular epithelium cells doubing time about 52.8 hour, after exponential phase of growth, cells arrest accrementition, activity depress, the ability of ingest MTT drop out.
细胞增殖实验：转化后细胞倍增时间约为52.8小时，对数生长期后细胞停止分裂增生，活性降低，摄取MTT的能力下降。
At the same time, in order to keep the stability of calculation, the exponential scheme of Scharfetter and Gummel is employed, on the basis of comparison between several schemes. The surface charge method is combined with fluid model to simulate the discharge current in the discharge cell.
同时为了保证计算的稳定性，本文在比较了多种粒子连续性方程的离散格式基础上，采用了指数格式，即保证了计算的稳定，又能获得较高的计算速度。
The Lyapunov theorem and its converse theorem of globally exponential stability for the discrete-time systems family in which the sampling period is a parameter are proved.
对以采样周期为参数的离散时间系统族，证明了全局指数稳定的Lyapunov定理和逆定理。
Considering time variant system, we also try to use exponential weighted recursive control to modify our process.
而若考虑此系统为时变系统时，我们也尝试使用指数加权递回来做更进一步的修正。
We are experiencing exponential financial growth for the first time.
这是我们第一次经历指数性的经济成长。
The relationship between the pitting depth D(subscript σ of LY12CZ in 3%NaCl aqueous solution and applied stress and corrosion time was calculated, and the results showed that the correlation was accorded with the formula D(subscript σ)=A'×C0exptA't, the formula indicated that the relationship between pitting depth and applied stress was accorded with exponential function D(subscript σ)=Dexp under the same corrosion time and power function D(subscript σ)=A't under the same applied stress.
根据理论假设和计算得出LY12CZ在3%NaCl水溶液中点蚀深度D与外加应力σ及腐蚀时间t间符合等式D=A×C0expt=A't，表明在腐蚀时间相同的情况下，点蚀深度与外加应力之间应符合D=Dexp的指数函数规律；外加应力相同的条件下点蚀扩展速率与腐蚀时间符合D=A't的幂函数的规律。
A basic assumption embedded in the previous analysis on human dynamics is that its temporal statistics are uniform and stationary, which can be properly described by a Poisson process. Accordingly, the interevent time distribution should have an exponential tail.
经典的人类动力学分析中包含了一个潜在的假设，就是人类行为的时间性可以用一个泊松过程很好地描述，因此人类发出相继行为的间隔时间分布应该具有一个指数的尾部。
One of the many consequences of the exponential power-versus-time curve in computing, and the
计算科学中效率比时间的指数曲线，以及相应的软件开发速度，造成了众多的结果。
One of the many consequences of the exponential power-versus-time curve in computing, and the corresponding pace of software development, is that 50% of what one knows becomes obsolete over every 18 months.
在计算领域成级数方式增长的能量vs时间曲线，以及相应的软件开发的进步，带来的影响之一就是一个人的知识每18个月就被淘汰掉50％。
One of the many consequences of the exponential power-versus-time curve in computing, and thecorresponding pace of software development, is that 50% of what one knows becomes obsolete over every 18 months.
在计算领域成级数方式增长的能量vs时间曲线，以及相应的软件开发的进步，带来的影响之一就是一个人的知识每18个月就被淘汰掉50％。
At the same time, rate constants at different temperatures and the data of activation energy and pre-exponential factor were determined.
并在实验考察的温度范围内，获得了反应产物1010的浓度随温度和反应时间变化的经验方程式，综合活化能为37.7kJ/mol。
For gas and oil fields at their depletion stage, type-Ⅲ water drive curve cannot be representative of the relationship between the production performance and development time. The prediction model of exponential decline cannot be used to predict those indexes, such as water cut, water rate, liquid rate, cumulative water production and cumulative liquid production, etc.
油气田进入递减阶段后，丙型水驱特征曲线不能预测开发指标与开发时间的关系，指数递减预测模型在动态预测中不能预测油气田的含水率、产水量、产液量、累积产水量和累积产液量等。
Cooling rate is an exponential relationship between plastic temperature and time.
冷却速率是一种与温度和时间的指数关系。
The output pulse of the generator has an exponential waveform, and its rising time is 0.4～0.6μs.
该高压脉冲发生器有较强的带负载能力，外接负载只要大于1.2kΩ就能保证性能的稳定。
With double exponential waveform as exitation, we studied the electric field waveform in the hounded- wave simulator with different terminal load. The results indicate that simple matched impedance couldn't eliminate the reflection of terminal load completely. The number as well as the location of the terminal impedance has severe effect on the reflection of electric magnetic wave. This conclusion is useful for developing large-scale EMP simulator with 2~3ns rising time.
从已知的大型有界波模拟器的结构出发，用双指数波作为激励源，对有界波模拟器终端不同结构的负载进行了仿真计算分析，我们发现单纯的阻抗匹配不能完全消除终端负载对来波的反射，并联电阻的根数以及设置的位置对来波的反射都产生了显著的影响，这一结论为设计上升沿2~3ns的大型电磁脉冲场模拟设备具有一定的参考意义。
By analyzing the testing result, the paper establishes, for the first time, a new weighted-exponential attenuation law for evaluating the penetration rate of the natural γ-ray pasing thru different thicknes of coal layer. The law fits quite well with the practical situation.
通过对国外现代CIS技术的分析比较，结合国内采煤工艺和技术条件，本课题选择对人身无辐射污染和最有发展前途的自然γ射线（Naturalγray）CIS技术作为研究对象，从理论和实验上对其传感机理和方法进行了较详尽的分析和研究。
According to historical traffic of system, this algorithm combines exponential estimation with cumulative mean errors; therefore it can estimate the arrival of packets next time and request extra bandwidth for them in advance.
该算法依据系统的历史流量数据将指数平均预测和平均累计误差结合起来，对下一时刻到达W系统的数据流量进行估计，在数据流到达之前预先申请额外的带宽资源用于服务该数据流，从而减少实时业务流的时延滞后，并减轻数据流对缓冲的压力。
Subsequently, there are three critical indices, the unsteady heat-transfer period to, the retardation timeτ, and the contact angle at equilibrium state A∞ are defined herein. The decrease in contact angle against time can be simulate by an exponential decay that involves these three critical indices.
另外，三个重要指标是非稳定热传导时间t0，迟滞时间τ，平衡状态接触角Α∞等，随著时间递减的接触角可由包含这三个重要指标的衰退指数来模拟。