不足之量

Because the equation is a various coefficients second-order parabolical partial differential equation,explicit difference formats usually have high condition for stability. Implicit difference formats have good stability,but they must calculate a set of algebraic equations,which are too complex.

由于泥沙扩散方程是一个二维变系数的抛物型方程，对于多维的方程，显格式往往稳定性要求很高，而隐格式虽然稳定性较好，但它要解大型的代数方程组，工作量也非常大，为了克服这两种格式的不足，常用ADI法求解，但仍存在一些计算量偏大等不足之处，因此构造出更好的差分格式是有必要的。

However, the single closed loop controlling only can make the ratio a certain number, the defect is it could not eliminate the spontaneity surge of main momentum, so minor momentum changes when the main momentum fluctuates, the total flux could not remain fixedness.

然而单闭环比值控制系统仅能实现从动量Q2与主动量Q1间的比值为一常量，但这种系统的不足之处是主控量的自发振荡不能消除，从而导致了从动量跟着主动量的波动而变化，使该系统控制后的总流量不是一个定值。

On the one hand, the quantitative meaning implies that time is an important resource of life that the multipara evaluate their new life patterns according to the sufficency and efficency of the amount or tempo of usage of time through their subjective experiences. Most multipara complain about the pressure of time.

经产妇对时间之运作蕴意包含两大范畴；即量性意义及质性意义，量性意义占27%是指经产妇将时间视为生活中之重要资源，再由主观知觉经验评估时间可量度有不足或充裕、或应用速度的快、慢，其中91.7%的经产妇表示时间不足运用。

According to the theory of invariants of the stress tensor and inductive method, a unified theory of failure is possible.

作者从应力张量不变量出发，提出一些现有强度理论的缺点或不足之处，根据应力张量不变量理论和归纳方法提出了可能的统一的强度理论。

The purpose of this study was to investigate the effect of instruction and multiple intelligence in order to develop student's superior ability and to avoid meeting student's weakness instead of improving IEP instruction planning. and traditional remedial inefficience. The main sample distributed to experimental group and control group.

本研究旨在尝试以多元智慧概念，应用在国小资源班学生优势能力开发，以回避其弱势管道，进行评量、教学设计、实际教学之改善，突破传统重视不足能力之补救迷思。

So research in the cognitive diagnosis under polytomous scoring model is very meaningful.

随着布什总统&不让一个孩子落下&的政策出台，美国的认知诊断研究也逐渐成为热门，但目前的大部分研究仍基于0.1 评分，而多级评分可以提供更丰富的信息，并且我国的试题类型往往是多级评分的，因此研究基于多级评分的认知诊断具有重要的意义。1 本文采用模型介绍1.1 目前同类相关研究采用的模型及方法1.1.1 多级评分个人拟合统计量Drasgow提出的多级评分个人拟合统计量指标_l J可以将多级评分模型中被试是否属于异常反应诊断判别出来，但该指标功能局限性大，只能对被试反应模式是否正常做出定性说明，还不能指出哪些属性掌握与否，尚达不到针对考生不足之处进行补救教学的目的。1.1.2 Tatsuoka的规。。。。。。

The prevalence of lung functional impairment in simple pneumoconiosis varies with the parameter measured, and DLco determination may be helpful in case of normal spirometric measurement. Chin J Public Health.

煤矿工单纯尘肺症肺功能障害的盛行率视参数的种类而有所不同，肺弥散量测定可以补充肺量测定之不足。

But the algorithm involves big matrix computation except the scaling coefficient vector and the wavelet coefficient vector at the coarsest scale.

不足之处是较大尺度的小波系数较长，存在较高维数的向量和矩阵运算，计算量大。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。