查询词典 difficult problem

Even when he or she meets a difficult situation, if he or she keeps a good mood and is cool-headed, they can use their intelligence to solve the problem.

即便他或她遇到了非常糟糕的境况，只要他或她能保持一个良好的心态和冷静的头脑，他们就能运用他们的知识来解决问题。

The production of Corbicula fluminea has been decreasing in recent years. The most difficult problem for farming Corbicula fluminea is lack of enough freshwater, due to the water pollution in Taiwan.

台湾蚬养殖产量并没有年年增加，反而有所减少，主要是由於淡水资源的污染，以及超抽地下水导致地层下陷的影响，使得淡水资源的取得不易。

The main problem with the Corsair was its long nose, which obscured forward visibility and made it difficult to land on an aircraft carrier.

主要的问题是与海盗船的长鼻子，它掩盖着的知名度和使人们难以土地航空母舰。

This kind of coupled problem was more difficult to deal with than the general.

这样一种耦合的问题加大了解决问题的难度。

But the massive project practice proved these technical measure the application fundamentally has not solved the rut problem; Regarding the city"urban heat island effect"the question, the measure which uses generally is enhances the city round-off work and the expanded lawn, the water place area, but the city major part area is constructed and the path is covering, the ultra big city its round-off work extremely is in particular difficult to enhance, simultaneously the spatial distribution very is possibly imbalanced.

但是大量的工程实践证明这些技术措施的应用也未从根本上解决车辙问题；对于城市"热岛效应"问题，普遍采用的措施是提高城市森林覆盖率及扩大草地、水地的面积，但城市的绝大部分面积被建筑和道路覆盖着，尤其是超大城市其森林覆盖率极难提高，同时空间分布可能又很不均衡。

The most difficult problem is the weight unevenness of yarns and irregularity during developing semi-combed wool cotton blending yarn using cotton equipment. Knitting crosspiece is easily formed and the surface of fabric is rugged.

在利用棉纺设备开发半精梳毛纺混纺针织纱过程中，遇到的突出问题是纱线的重量不匀率和条干不匀率较差，极易形成针织横档或使织物表面平整度变差。

In those tests, the most difficult problem is to discriminate the types of the crystalline phase change.

因此在材料的研制中必然要对材料的物相进行经常的、大量的检测工作。

How does the socialistic country of economic cultural lag realize agricultural modernization, this is the common difficult problem that each country encounters.

经济文化落后的社会主义国家如何实现农业现代化，这是各国碰到的共同难题。

It is well known that it is numerically difficult to solve a high-index DAE problem.

采用此类语言的物理系统建模经常产生高指标DAE问题。

Damping factor alignment is a key and difficult problem to the signal processing in magnetic resonance spectroscopy.

衰减系数的校正是磁共振波谱信号处理和分析过程中的一个关键难题。

Don not attempt to do something which you can not to do.

不要企图做那些办不到的事情。

The expression of CTGF and TNF-αweredetected by immunochemistry and the number of Clara Cells was calculated.

光镜下观察肺组织的病理变化，采用免疫组化染色观察肺组织中结缔组织生长因子和肿瘤坏死因子-α的表达和Clara细胞的数量。