查询词典 difficult

It seems not to be healthy to swallow ,but you will hurt his amour-propre if you refuse to swallow .it is actually a eternal difficult problem to decide what to do in the one thousandth of a second.

吞下去好像很不卫生，拒绝吞下去又会伤害他自尊心。这千分一秒之间，应该怎样做，原来是千古艰难的一个问题。

Although there is no need of another approval for the validity and reality of the same letter, however, to provide an ampler surety so that observance may be firmer and abolition more difficult, greater strength will be given to it by the approval of so many fathers.

虽然没有必要另一批准的有效性和现实的同一封信中，但是，提供担保，以便ampler遵守可能是坚定的和废除更加困难，更大的力量将得到它的批准，如此多的父亲。

The main research of this paper is how to apply Soft-sensing Technique in the process of distilling and fermentation to solve the problem of an effluent quality parameter of the amylum rate which is usually difficult to measure.

本文主要研究如何应用软测量技术解决酿酒发酵过程中重要质量参数——淀粉利用率的难测问题。

Defended by an army of 6,000 men the city was difficult to take.

有一支6000人的部队守卫，这座城市很难攻下来。

Therefore, from an average of housing prices, the decline is difficult.

因此，从平均房价的下降是很困难的。

Eg. It took me an hour and a half to work out the difficult problem.

我花了一个半小时来解决这个棘手的问题。

Diagnosis may be more difficult when more than one type of anaemia is present.

诊断可能较为困难时，不止一个类型的贫血症是目前。

This has always been difficult with analog recording.

这个在模拟录音中总是很难达到的。

It is difficult to account for these analogies.

这是很难考虑到这些类比。

My physics teacher often use analogies to illustrate a number Of difficult to understand the concept.

我的物理老师经常使用类比来说明一些较难理解的概念。

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。