制约因素

The separation speed is very important to the development of two dimensional liquid chromatography.

在二维液相色谱中，第二维的分离速度是制约其发展的重要因素。

But ECT technology has the following characteristics: 1 the measured capacitance and its change induced by the measured material concentration variation are very small, but the stray capacitances of co-axial screening cable and CMOS switches are relative very large, so the capacitance detecting is easily affected by the stray capacitances, 2 the electric fields in the sensors detecting region is affected by the permittivity distribution, non-uniformity of the space responsive sensitivity is very high, and the image reconstruction is undetermined.

但由于ECT技术中，首先所检测的微电容量及其因物流相含率的变化所引起的变化量很小，而由相关的连接同轴屏蔽电缆与切换CMOS开关所引入的杂散电容远远大于测量电容，微电容的测量容易受杂散电容等的影响；其次，多电极电容传感器测量区内的电场受介质分布的影响，且测量区内的空间响应灵敏度极不均衡，其影响图像重建的不确定性；其三，ECT中的图像重建，由于其是一个欠定问题的求解，在迭代求解方法中，迭代的初值影响迭代过程收敛到近似解的速度；其四，对于气/固两相流应用而言，由于ECT系统在线标定的难以实现，管壁磨损等因素的影响制约该技术应用于生产工艺中气/固两相流的长期连续检测。

It has become one of main factors that restrict development of economy and social advancement of coal mining areas.

采煤沉陷已经成为制约煤矿区经济与社会发展的主要因素。

The impact of colloid and surface chemistry factors on the reaction is analyzed.

分析胶体与表面化学因素对反应的制约，提出了有待改进的工艺环节和改进方向。

Due to its complexness and the difficulties in the realization of programming the fault tree models, the construction of a fault tree is usually made manually. With the development of the computer technology, an approach of automatic fault tree construction had been developed in the late 90s.

同时人们围绕故障树的建立也开展了一些研究，建立了一些故障树自动建造方法，然而故障树模型的建立过程中需要考虑众多的因素，相比之下目前的自动建树方法局限性还比较强，在这些方法的基础上的实现的自动建树软件实用性受到很大程度的制约，到目前为止还没有出现能够实际应用的商用软件。

But the western technology and economy can't develop concertedly, the paper analyses the disadvantage of the old technologic system which limited the western development.

针对西部科技与经济未能协调发展的现状和特点，通过对制约西部科技经济发展的传统科技体制这一主导因素的弊端分析，以及对科技体制改革的现状分析，文章认为为21世纪西部经济发展提供强力科技支撑的途径在于科技体制创新。

Cause of the financial leverage is condition to much of equation, the time gain the financial leverage ,you have to assume large immensity of financial risk.

由于财务杠杆受多种因素的制约，在获得财务杠杆利益的同时，也伴随着不可估量的财务风险。

However, due to various factors and the impact of the constraints, more and more problems are highlighted.

然而，由于受到各种因素的制约和影响，越来越多的问题也突显出来。

These issues by society, families, schools, and other factors and the impact of constraints.

这些问题受社会、家庭、学校等多方面因素的影响和制约。

There are many limiting factors for the construction of the trade unions in township enterprises.

乡镇工会组织建设受到许多因素的制约，这既有认识上的偏差，又有政府体制方面的原因。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。