换句话说，任意时刻A物质的浓度等于初始浓度，减去常数乘以时间。
In other words, the concentration of at any time is given by the initial concentration, t minus the rate constant times time.
一定浓度的气体通过固体颗粒层扩散-反应时，其扩散深度的平方与扩散时间的比值为常数。
The ratio of the square of certain concentration gas diffusion depth and diffusion time is constant when it diffuses and reacts through the solids bed.
介绍了利用求极值的方法，通过对反应体系中单组分平衡浓度的测定，求连串反应的平衡常数。
This paper introduces how to seek the equilibrium constant of consecutive reaction by using the method of limiting value and by the determination of single component concentration.
通过与国外文献计算结果比较可知，物性系数、化学反应速率常数、边界条件处理等对组分浓度影响较大，缺乏这些数据库将会影响计算结果。
By comparison with computation results of reference, it is cleared that material parameters, chemical reaction rate constants and boundary conditions affect the species concentration very much.
在文中，我们也分析了可以把表面非平衡少子浓度作常数处理的条件。
In this paper, the condition under which the surface excess minority carrier density may be treated as a constant is also analysed.
从动力学常数以及挥发性脂肪酸（VFA）的积累情况来看，随着染料浓度的增加，外加基质的降解会受到抑制。
The kinetic constants and VFA accumulation in reactors showed that substrate degradation could be inhibited by increased dye concentrations.
溶液浓度、流速提高，吸附速率常数及“准平衡”吸附量随之加大。
Increase of concentration of solution and flow velocity brought about rise of adsorption rate constant and "quasi-equilibrium" adsorption amount.
结果表明二聚体的形成取决于取代基团的性质以及溶剂的介电常数与溶液浓度。
The results show that the formation of dimers depends on the nature of substituent group, dielectric constant of solvent, and concentration.
根据多元酸碱滴定计算通式，针对实际情况化简后，非线性回归同时求出浓度和条件离解常数。
On the basis of our mathematic models of the titration, the content and conditional dissociation constant may be determined by using nonlinear regression.
测定了有效扩散素数、传质系数、吸附和脱附速率常数、平衡常数和饱和表面浓度。
Effective diffusivities, mass transfer coefficients, adsorption and desorption rate constants, equilibrium constants, saturated surface concentrations have been determined.
实验结果表明：速度常数随浸泡温度的上升和PVC膜中DEHA的起始浓度的提高而增加。
The tests showed that the rate constant value increased with the dipped temperature raise and the increment of the DEHA's initial concentration in the PVC film.
随着溶液中金属离子浓度的增大，络合形成常数减小。
It was found that formation constants decrease with the increasing concentration of metal in the solution.
气体流量越大，木质素磺酸钠的初始浓度越低，速率常数K越大，降解效果越好。
Rate constant (K) of degradation increases with increasing the gas flow rate or decreasing the initial sodium lignosulfonate concentration.
掺镁浓度对晶体相匹配温度、相匹配角、光学均匀性、点阵常数和密度的影响。
The influence of Mg concentration in doping on phase matching temperature, phase matching Angle, optical homogeneity, lattice parameter and density of the crystal is also stated.
爆发型模式的通道电流不仅有浓度依赖性和电位依赖性，其升放时间常数也随箝制电位变正而增大。
The unitary current of burst mode was not only dependent on Na concentration in the pipettes but also on the test voltage.
将非线性规划问题的单纯形加速法用于混合酸的线性滴定计算，同时优化酸浓度及有关条件常数，求出酸浓度的最优解。 讨论了影响单纯形法计算速度的因素。
The simplex optimization method about nonlinear programming problem has been used in the mixed acid linear titration and the effect of various factors on computative speed has been discussed.
用此种复合材料作为臭氧发生器介质的实验结果表明，臭氧浓度随介质的介电常数的大小改变而近似呈线性变化。
The ozone generation characteristics of MVQ/BT Ozonizer are also discussed, and the test results show that the ozone concentration and output are linearly increased by increasing dielectric constant.
结果超过50%的胰岛素在电致孔经皮传输的过程中滞留于皮肤中，滞留量随脉冲时间常数的减小和胰岛素浓度的增加而增加；
RESULTS Over 50% insulin was entrapped in skin during transdermal delivery, and more insulin was entrapped with the shorter pulses and higher concentration of insulin in the solution.
结果超过50%的胰岛素在电致孔经皮传输的过程中滞留于皮肤中，滞留量随脉冲时间常数的减小和胰岛素浓度的增加而增加；
RESULTS Over 50% insulin was entrapped in skin during transdermal delivery, and more insulin was entrapped with the shorter pulses and higher concentration of insulin in the solution.
应用推荐