变化系数

Under the condition of varying , the ratio between noise levels in local sensors, this dissertation derives the analytic expression of performance of the centralized OS-CFAR detection for and local signal-to-noise ratio in nonhomogenous background.

本文在局部传感器背景噪声功率水平间的相对比例系数变化情况下，推导出了集中式 OS-CFAR 检测在且局部观测信噪比条件下在非均匀杂波背景中检测性能的解析表达式。

Constant value of vena contracta coefficient has been employed in the well-used quasi-steady models for computing the nonlinear acoustic impedance of the orifice. However, this nonrealistic assumption degrades the accuracy of the theoretical models.

常用的小孔声学非线性效应的准定常模型采用不随声强变化的vena收缩系数，这种不合实际的假设影响了非线性声阻的计算精度。

Signal multiplier spectrophotometry was used for the determination of baicalin, clorogenic acid, phillyrin and pH variation when shuanghuanglian with 5 kinds of intravenous solution and penicillin injection was mixed.

本实验应用系数倍率法测定双黄连粉针与5种输液及青霉素配伍时黄芩苷、绿原酸、连翘苷的含量，并考察pH值变化。

These tests show that: 1. suction decreases with the increase of the water saturation in the chalk; 2. stress variants proposed are available for describing the stress state of the unsaturated chalk; 3. preconsolidation pressure increases with suction, while the effects of suction on the compressibility coefficients λ and κ are not evident; 4. as usual unsaturated soils, the permeability to oil of chalk increases with the suction; 5. yield strength of the chalk behaves with volumetric strain hardening; 6. cohesive behaviour of the chalk is related to the stress level, and relation between time-dependent deformation and logt is linear; 7. cohesion of the chalk decreases with the increase of the suction, while the elastic stiffness and the cohesion coefficient increase; 8. strength and elastic modulus increase with the strain rate, while the strain at the peak strength decreases with the increase of the strain rate.

试验结果表明，白垩中的虹吸力随水饱和度的降低而提高；吸力、水饱和度和强度的变化过程均与时间有关；可用由理论分析得到的应力状态变量描述非饱和白垩的平衡状态；前期固结压力随吸力增加而提高，而压缩指数λ与κ则同吸力无关；应力大于前期固结压力时，粘性变形与时间的对数关系曲线呈线性关系，其大小和增长速率均随吸力减小而增大，可视为白垩弹性刚度降低和粘性系数增大的结果；前期固结压力和变形模量随着应变速率的提高而提高，压缩指数κ和λ则随应变速率的提高而减小；应变速率较低时，粘性和吸力对前期固结压力及压缩指数的影响较小；白垩中油的渗透性随着吸力增加而提高；白垩在屈服阶段具有明显的体积应变硬化特性。

It is also found that the temperatures at which the CO2 density, thermal conductivity and viscosity possesses the maximum change are very closer to the pseudocritical temperature.

CO2的密度、导热系数以及粘度变化最大时的温度与准临界温度相当接近。

The effect of additive is investgated by measuring solution loss, foam multiple, the quotiety of water retention, and the causation also are discussed.

通过测量发泡剂携液量、发泡倍数、保水系数的变化规律表征外加剂对发泡剂泡沫性能的影响，并对产生影响的原因进行了解释。

After that, the thesis will introduce an improved EZW algorithm based on scalariform quantization. The new algorithm can fix some redundancy treating in reorganizing the symbol for wavelet coefficients. Finally, we will draw some conclusion after some experiments by comparing the two methods.

同时，从阶梯量化后系数符号的变化规律，提出进一步优化算法，提高图像的压缩比；最后利用对比实验的方法，先对比阶梯量化与传统EZW在性能上的差别，然后再比较新的改进算法是否进一步提高了压缩比。

In order to study the variations of fertile island during the process of desertification, the authors investigated and analyzed the soil chemical characteristics beneath and around the tamarisk shrub, the tamarisk δ^13C in saline meadow, tamarisk shrubland and sandy desert landscape in northern Taklamakan Desert, northwestern China.

为探索荒漠化过程中肥岛效应的变化规律，选择盐化草甸、灌丛及沙漠3种景观类型，测定了柽柳灌丛下和灌丛间空地土壤有机碳、全氮、水分含量以及柽柳营养枝δ^13C等指标，并用土壤养分的富集系数来表征肥岛效应的强弱。

Aiming at closed-loop water system, by the method that shutting certain subcircuit, and solving the piping network, computing flow deviation of other subcircuits', then analyzing the changing rules of the stability vary with various factors.

针对闭式水循环系统，采用关闭某个支路，进行网络求解，计算其他支路的流量偏离系数的方法，分析了稳定性随各种影响因素的变化规律。

We will contrast result by ANSYS simulating to the data which got on testing. Then we hope to obtain the rule which dynamical respond how to change in the different parts and locations during the trolly wok circulation.

将仿真模拟计算的数据和实际测量的数据进行对比，综合这两个方面的数据，得出动力响应系数在卸船机结构上不同部件、不同位置上的变化规律，为将来卸船机的钢结构设计提供相应的支持。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。