一个直接的方法就是难度设计者花费大量的时间专注于速度分布；几何为辅。
One difficulty with direct methods is that the designer spends a great deal of time focusing on the velocity distribution; the geometry is secondary.
分类任务的难度主要通过增加相关维度的数量、类别刺激分布的间断性和增加类别数量等方式体现出来。
The difficulties of classification tasks are expressed by discontinuous category distribution and adding relevant dimensions and category number.
此外，时间和空间分布状况的不同也增加了评价的难度。
In addition, time and space distribution can also increase the difficulty of loss assessment.
第三，采用二项分布函数完成自适应题库系统中难度比例的控制。
Second, we use Binomial Distribution Function to accomplish the control of difficulty proportion in Adaptive Item Bank System.
特种工程车辆由于其结构复杂，使用中分布广泛，其故障诊断与维护工作难度很大。
Special engineering vehicle's structure is very complicated, and they distribute in wide areas, their fault diagnosis and maintenance are very difficult.
在这种情况下，海量数据分布在各种异构的存储资源上，给用户的访问增加了难度。
In that case, there are huge amounts of dada distributed over different storage resources, so it is very difficult for users to access them.
对内台阶锥形环件轧制难度进行了分析，提出用环件锻件和轧制毛坯的水平横截面积分布规律来描述内台阶锥形环件的轧制难度。
The distribution law of horizontal cross section area of ring forging and ring blank is put forward to describe the rolling formability of conical ring with inner steps.
地下岩体的所有这些特点使裂缝分布预测的难度加大。
All these characters of underground sedimentary stratum make it difficult to forecast the distribution of fracture.
超薄互层油藏储层厚度极小，且物性好与物性差的储层交互分布，模拟难度大。
The thickness of ultra thin interbedded layer reservoirs was less, there existed crossing distribution of reservoirs with good and poor physical properties and it was hard for numerical simulation.
同时，其工地上的仓库呈分布式和动态性特征，更增加了物流管理难度。
Meanwhile, the warehouse on its building site is separated and dynamic, which increase the difficulty in management of the logistics even more.
我们采用中间件进行开发，原型系统既具有平台无关性，能在分布式环境中工作，又减低了开发强度和难度。
We use middle ware to develop the prototype system so it's platform independent and can be used in distributed environment. This also has reduced the developing difficulty and intensity.
结果表明此次试卷设计较合理，平均分数82.26，分数近似正态分布，试题难度和区分度属中等。
The results showed that the scores was Gassion distribution, the average score was 82.26, and the difficulty and discrimination of the test paper were appropriate.
现有的技术对于实现具体的、个别的分布式检索系统的互操作虽然没有问题，但要建立普遍意义的互操作规范，尚有一定难度。
Although present technologies can be applied to realize the interoperability of specific distributed retrieval systems, it is still difficult to establish universal interoperability specifications.
现有的技术对于实现具体的、个别的分布式检索系统的互操作虽然没有问题，但要建立普遍意义的互操作规范，尚有一定难度。
Although present technologies can be applied to realize the interoperability of specific distributed retrieval systems, it is still difficult to establish universal interoperability specifications.
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