目的：探讨表面弥散系数(adc)评估肝占位病变的价值。
Purpose: To evaluate the diagnostic value of apparent diffusion coefficient (ADC) for hepatic masses.
在井巷紊流传递过程中，纵向弥散系数远远大于紊流扩散系数。
In mine mass transfer the longitudinal dispersion coefficient is by far greater than the turbulent diffusion coefficient.
目的探讨胶质瘤表观弥散系数(adc)与病理微观状态的关系。
Objective to clarify the correlation between apparent diffusion coefficient (ADC) and microscopic histopathologic state of gliomas.
对各组大鼠的磁共振成像结果进行分析，比较各组表观弥散系数（ADC）。
The findings of MRI were analysed, and the apparent diffusion coefficient (ADC) values were compared among each group.
每个参与者研究的测量结果被转化成一种叫做表现弥散系数(adc)的数值。
For the study, measurements were translated into scores called apparent diffusion coefficient (ADC) values for each of the participants.
建立了一种新的测量表面活性剂在油中弥散系数的实验方法，该方法简单适用。
A new measurement method of surfactants in oil diffusion coefficient is established and is simple and practical.
通过地下水弥散实验研究获得了地下水实际流速、流向、纵横向弥散度和弥散系数。
Actual flow rate, direction, dispersity and dispersion coefficients of groundwater are achieved by the dispersion tests.
条件模拟方法计算出的水头、流速和水动力弥散系数的标准差要小于非条件模拟的结果；
The variability of the pressure head, velocity and hydrodynamic dispersion coefficient obtained from conditional simulation are smaller than those obtained from unconditional simulation.
目的：探讨不同弥散强度对弥散张量成像中表观弥散系数值及部分各向异性指数值测定的影响。
Purpose: To study the effect of different diffusion weighting on ADC and FA measurements of normal brain.
目的评价磁共振弥散加权成像(DWI)表观弥散系数(adc)和ADC图对脑缺血的诊断价值。
Objective To evaluate the diagnostic value of (DWI) apparent diffusion coefficient (ADC) and ADC map in diagnosis of cerebral ischemia.
这一细胞受损过程使“表观弥散系数(adc)”升高，ADC是研究脑中水分子分布的一种测量方法。
This process of cellular damage causes an increase in the "apparent diffusion coefficient," or ADC, which is a measurement used to study the distribution of water in the brain.
目的：探讨利用磁共振弥散成像(DWI)和表观弥散系数(adc)测定对乳腺癌范围确定的可行性。
Objective: To investigate the feasibility with diffusion-weighted imaging (DWI) and the apparent diffusion coefficient (ADC) value in detecting accuracy of the cancer extension.
目的：确定脑梗死磁共振弥散加权成像(DWI)信号改变和近似弥散系数(adc)的时间演变规律。
Aim: To determine the time course of signal intensity changes and the apparent diffusion coefficient (ADC) abnormality on MR diffusion weighted imaging (DWI) after cerebral infarction.
弥散系数是进行地下水水质评价和预测的重要水文地质参数，也是水文地质求参尚未很好解决的问题之一。
Disperston coefficient is an important hydrogeological parameter for the assessment and forecast of groundwater quality. It is one of the problems not well solved for hydro-geology.
构造模型进行预测的关键在于确定模型参数，在土壤溶质运移模型中一般包括弥散系数和延迟因子两个参数。
The key to establish model and predict lies in the determination of model parameters, which include generally dispersion coefficient and retardation factor.
重症急性酒精中毒死亡组大鼠脑的磁共振弥散加权成像均出现高强度信号，表观弥散系数值在短时间内骤降。
Abnormal high signal can also be seen on DWI image of severe alcoholism dead group, and ADC value showed a sudden drop in a short term.
目的：评价近似弥散系数（ADC）在鉴别星形细胞肿瘤、瘤周水肿及正常组织中的作用，以及对星形细胞肿瘤良、恶性评估中的价值。
Purpose:To evaluate the usefulness of ADC in differentiating tumor, edema, and normal brain tissue, and in grading the malignancy of cerebral astrocytomas.
各期病灶表观扩散系数值及在弥散加权成像上信号不同。
The signals on ADC value and DWI of the focus were different in various stage.
本文对具有初始几何形状及维里系数相同，但初始速度弥散度分布不同的三轴椭球进行了数值模拟。
In this paper, the configuration of triaxial ellipticals with different initial dispersion velocities is studied by numerical simulation.
当入渗铵态氮浓度较大时，影响铵态氮迁移转化的显著因素是生物作用导致的铵态氮的硝化，以及土壤的渗透系数、弥散度等因素。
When the infiltration ammonium concentration is high, the main factors are nitration of ammonium nitrogen by biological actions, dispersivity and permeability of the soil.
当入渗铵态氮浓度较大时，影响铵态氮迁移转化的显著因素是生物作用导致的铵态氮的硝化，以及土壤的渗透系数、弥散度等因素。
When the infiltration ammonium concentration is high, the main factors are nitration of ammonium nitrogen by biological actions, dispersivity and permeability of the soil.
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