在困难中

The main difficulty is that the amplitude of the sley's movement necessary to allow a large enough shed would produce very large forces of acceleration and retardation if its movement were confined to a relatively small part of the pick cycle.

这样做的主要困难是，如果筘座的运动被限制在引纬循环中的较小部分，为了形成较大的梭口，筘座的动程会引起较大的加速力和减速力。

The main difficulty is that the amplitude of the sley's movement necessary to allow a large enough shed would produce very large forces of acceleration and retardation if its movement were confine d to a relatively small part of the pick cycle.

这样做的主要困难是，如果筘座的运动被限制在引纬循环中的较小部分，为了形成较大的梭口，筘座的动程会引起较大的加速力和减速力。

The advantages of a period of sley dwell, in order to increase the time available for weft insertion and thus allow a higher loom speed to be achieved, are so obvious that the possibility of including a similar feature on a shuttle loom should be considered. The main difficulty is that the amplitude of the sley's movement necessary to allow a large enough shed would produce very large forces of acceleration and retardation if its movement were confined to a relatively small part of the pick cycle.

筘座的静止时间对增加引纬时间，提高织机速度的这一优点是如此之明显，以至于应该考虑是否让有梭织机也具有类似的性能，这样做的主要困难是，如果筘座的运动被限制在引纬循环中的较小部分，为了形成较大的梭口，筘座的动程会引起较大的加速力和减速力。

The effect of Markov chain models in reservoir modeling is much concerned recently, but models are usually applied to simulating categorical attributes, such as lithofacies, sedimentary facies and subfacies, and very few to continuous attributes, such as porosity, permeability and oil saturation.

Markov链模型在储层随机建模中的作用越来越受到关注，但其多用于类型属性(岩相、沉积相、沉积亚相等)的模拟，对于连续型属性(孔隙度、渗透率、含油气饱和度等)的模拟还比较困难。

Since it has not much been used in clinic, and never used in China, to investigate its application for cataract extraction surgery, this study use Erbium: YAG laser for continual circular capsulorhexis on patients of senile mature white cataract, hyper-mature cataract or miotic pupil cataract with posterior synechia, which are difficult for capsulorhexis.

由于迄今临床应用甚少，国内尚未开展此项技术，因此本研究利用Er：YAG激光对采用常规手法撕囊困难的老年性成熟期的白色白内障、过熟期白内障及有虹膜后粘连的小瞳孔老年性白内障患者进行连续环形撕囊，来探讨其在白内障摘除术中的应用。

In the traditional way of teaching, teachers cannot present the students with vivid situation of abundance and complexity, as a result, the students have difficulty in systemize what they have learned.

第二部分结合学生学习现状，由于在传统课堂教学中，不能提供真实情境所具有的生动性、丰富性和复杂性，而使学生对所学知识的意义建构发生困难。

The bustling city teems with millions of humans and needless to say, plots for building are really hard to come by.

这座熙熙攘攘的城市充斥着几百万的人口，因此可想而知，要在这样的一座城市中不断建新的楼会有多么困难。

There have some difficulties in the applications of Neural Networks, the convergence for large scale problem is very slowly, the maturity of samples often can not be guaranteed, the calculating results usually trustless because the bad capability of extrapolation of Neural Networks.

人工神经网络模型在实际应用中存在一些困难，包括对于较大规模的问题学习过程缓慢，样本的完备性难以保证，由于人工神经网络的外推计算能力差而导致计算结果的可靠性降低等。

In its process, the problems, such as the imperfect of methods for determining and studying the human resource accounting, difficult for implementation, unclarified management are solved. By studying the accounting theory, its accounting elements are determined ...

在推行上市公司人力资源会计过程中，逐步解决人力资源会计确认、研究方法不完善、实际操作困难、管理定位不明确等问题，通过探索人力资源会计的理论依据，确定上市公司人力资源会计的要素，对上市公司人力资源会计进行科学分类，探索人力资源会计模型与计量方法等措施，完善上市公司人力资源会计程序和方法。

In its process, the problems, such as the imperfect of methods for determining and studying the human resource accounting , difficult for implementation, unclarified management are solved. By studying the accounting theory, its accounting elements are determined for a scientific sorting and searching for the accounting model and the measuring method, by which the procedures and methods for the accounting are perfected gradually.

在推行上市公司人力资源会计过程中，逐步解决人力资源会计确认、研究方法不完善、实际操作困难、管理定位不明确等问题，通过探索人力资源会计的理论依据，确定上市公司人力资源会计的要素，对上市公司人力资源会计进行科学分类，探索人力资源会计模型与计量方法等措施，完善上市公司人力资源会计程序和方法。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。