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With DSL there are still a lot of technical difficulties to be worked out.

对于dsl仍有大量的技术难题要克服。

The concept, symbolic play deficit in autism, was partly supported by this study. Most of children with autism could gradually develop the capacity of dual representation; and moreover, in the case of high functioning autism, symbol comprehension of triune representation remained intact. Their difficulties are more on the flexibility of functional or symbolic spontaneous play, rather than symbolic comprehension.

总结而论：自闭症儿童游戏能力的缺陷在本研究中得到部分支持，随著年龄成长，他们能逐渐发展出双重表徵的能力，三重表徵的能力发展在高功能自闭症儿童中亦未有困难，自闭症儿童象徵能力的缺陷，仍较集中在自发的功能性或象徵性游戏能力中弹性使用的部份，而非象徵理解的部分。

It is lowers designing difficulties, if maintained unit requires dustproof, waterproof and electromagnetic compatibility etc.

采用该技术设置维护通信端口无需额外增加硬件，降低了每个单元的硬件成本。

Economically developed countries, we are a country's economic difficulties.

经济发达的国家相比，我们是一个经济困难的国家。

In Chapter 3, we review the attempt and difficulties of Eddington and other physicists to solve the free will problem in new scientific frame, and in Chapter 4, we analyze the different views of the main creators of quantum theory about the same problem.

第4章考察了量子理论的主要建构者们围绕"自由意志问题"及其相关问题进行的思考。

The nonlinearity of Einstein′s field equation brings a lot of difficulties to solving of general relativity theory in case of weak field.

爱因斯坦场方程的非线性性给广义相对论的求解带来许多困难，在弱场情况下，可用近似处理的方法，把高度非线性的场方程变为线性场方程，简化了方程的求解。

There are significant complexities and technical difficulties in replacing the crossheads on the elevated Harrow Road, particularly as it supports the Westway above.

有显着复杂性和技术上的困难取代高架哈罗路crossheads，特别是因为它支持上述西区高速路。

On the other hand, speed, elision, and linking are regarded as the top three listening comprehension difficulties by JHS students.

教师和学生将说英语速度列为首要听力理解障碍。

Among the nine micro-skills, speed, linking, and pronunciation are concerned as the top three listening comprehension difficulties students have by JHS teachers, followed by elision, vowel reduction, assimilation, rhythm, intonation, and word stress.

九种听力技巧中，国中教师认为国中生遭遇的听力困难依序为说英语速度、英语连音、英语发音、英语省略音、英语母音省略、英语同化音、英语言语节奏、英语语调、英语单字重音。

However, elliptic curve cryptosystems, based on both of the finite fields mentioned above, have computational difficulties.

但是建立在这两类有限域上的椭圆曲线密码体制，在微机上实现的速度都比较慢。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。