可变化

In hydrological modelling one of the most common and significant challenges faced is the reduction of uncertainty in estimation and calibration of model parameters,especially how to estimate parameter values for ungauged basins and simulate the hydrological effects of basin development scenarios and water usage practices.

目前应用较为广泛的模型多为集总式模型。但是，集总式水文模型有很多缺点，如不能反映实际暴雨洪水产汇流的空间分布特性，无法全面的刻画水文系统分散输入集中输出的产汇流规律等。因此为了研究和解决变化环境中的水文水资源问题，评估和检测流域的径流过程和水资源量的动态变化规律，实现水资源的可持续利用和发展战略，必须开发研制有物理基础的分布式流域水文模型。

In infarction patients group,DTI can early detect some small infarction lesions in white matter. With the pathophysiological evolution of the disease, FA and ADCAV changes regularly. In hyper-acute stroke, FA of lesions have no consistent change, appreciably elevated or decreased. In acute, sub-acute and chronic stages of cerebral infarction, FA of lesions unrecovered declined.

在脑梗死患组DTI能早期发现较小的白质内梗死灶，脑梗死后脑组织FA值、ADCAV值随病理生理演变呈一定规律性变化，病侧FA值在超急性期较对侧无一致性变化，可轻度升高或者轻度降低，随后(急性期、亚急性期、慢性期)呈不可复性减低趋势。

The main manifestations are the renal parenchyma internal low density focus, morphological changes, calcification and possible complicating uronephrosis, ureter, urinary bladder and kidney pathological changes and damages.

结果 肾结核的CT表现随病程、病理的变化而变化，主要表现为实质内低密度灶、形态改变、钙化，并可合并肾积水、输尿管膀胱和肾周改变以及肾功能损害等。

With this graphic information-based model, the function can be induced to test the inclusion of dimension; and the location of associated dimension is delaminated according to the inclusion test.

提出了尺寸动态关系模型，该模型可较好地满足尺寸删除、插入、移动及尺寸参数值变化引起尺寸间关联性变化的自适应处理。

The difference of bulk density of coastal soils took an effect on infiltration rate and diffuse rate. The infiltration rate and diffuse rate of coastal soils which bulk density was small were big. The water transmitting experiment of coastal soils showed that the saturated conductivity of different layers in soil profile were great, and the saturated conductivity of undisturbed soil was highly higher than that of disturbed soil. The saturated conductivity of coastal soils embanked earlier was lower than that of coastal soils embanked later. Under different water content, the unsaturated conductivity of coastal soils had a great change and the bulk density had an effect on unsaturated conductivity. The soil with a low bulk density had a high unsaturated conductivity. Chlorine ion moved in coastal soil was an inert ion. The distribution of CU in soil was definite and repeated, which is no relation with the time and velocity of infiltration. The concentration of infiltration solution and the texture of coastal soils had no apparent effect on solute movement synthetic dispersion coefficient, while bulk density took an apparent effect on solute movement synthetic dispersion coefficient. Synthetic dispersion coefficient of coastal soils increased as bulk density decreased.

浙江大学硕士毕业论文浙北海涂土壤水分特性及溶质运移模拟研究 4、海涂土壤的导水能力强，且土壤剖面备土层的饱和导水率变化大，原状土的饱和导水率远大于扰动土的饱和导水率，围垦时间较早的海涂土壤的饱和导水率较围垦时间晚的海涂土壤的饱和导水率要小；不同含水量下的非饱和导水率变化范围很大，最大值与最小值差距可达 10'③ 5、容重的不同对入渗率、扩散率、非饱和导水率都有影响，容重小，入渗率、扩散率、非饱和导水率也花 6、在海涂土壤中运移的氯离子是一&惰性离子&，氯离子在土壤运移过程中的分布有一定的确定性和重现性，与入渗时间和入渗速度无关，溶质运移过程中，入渗溶液的浓度和海涂土壤的质地对溶质运移综合扩散系数DSh无明显影响，而土壤容重对溶质运移综合扩散系数DSh有影响，容重小，DSh大。

At least 0.1μg/ml of endotoxin can induce the morphologic changes and the decrease of F-actin in HUVECs. Endotoxin can injury HUVECs only when its concentration reaches 0.4μg/ml and incubates over 12 hours. It suggests there is a different molecule mechanism in VEC from the endotoxin-CD14 pathway in CD14 positive cells.

内毒素直接损伤血管内皮细胞须较大浓度(＞0.4μg/ml)，但在较低浓度下(0.1μg/ml)可直接引起内皮细胞的一些形态学变化和F-actin含量的变化，初步推测血管内皮细胞可能存在着与通常认识的内毒素—内毒素结合蛋白—CD14途径激活细胞不同的分子机制。

Through the topographical survey, literature research and analysis of the remote sensing images, we shall emphasize on the five factors of water conservancy, water flow, streams, water retaining and water utilization in the upper reaches of the river, which are interacted and interplayed.

研究结果表明，漓江为雨源性河流，降雨时空分配极不均匀，70%的降雨量集中在漓江上游区域，全年62.7%降雨量和降雨时间集中在四个月内(即4～7月)，最大的日降雨量可达415.8mm；降雨量最小的月份出现在12月至翌年1月，仅100～110mm，占全年降雨量的6%左右，由此直接影响流域河川径流季节性的变化，造成洪水期和枯水期现象，周期性水量的变化是不为人们意志改变的一种自然规律。

He thermal oxidation process of saturates and aromatics with different addition agents were studied by means of In-situ FTIR.

FOT通常利用试验后的沥青粘度变化来评价沥青的老化性能，红外光谱法可研究沥青老化前后官能团的变化。

The composition of soda varies between 20% and 80%, whereas sodium sulfates between 80% and 20%.

熔剂中碳酸钠的含量可在20％～80％的范围内变化，而硫酸钠则相应在80％～20％范围内变化。

The microcontroller superposes the parameters with the video images from video tapes and then outputs to the monitor. While observing the outside activity of the athletes and understanding the inner parameter variations, users can make more precise judgments on how the exercise processes influence the body encumbrances.

其作用是把测量的参数通过单片机与监视录影将影像叠加在一起，最后在监视器上显示输出，可使监测者在观察运动员整体外部活动的同时，了解到其内部参量的变化，能更准确地判断人体负荷随著运动进程的变化所产生的的影响。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！