查询词典 difficult problem

The modeling and control of pH neutralization processes is a difficult problem in the field of process control.

pH中和过程的建模与控制一直是过程控制领域的难题。

ABSTRACT Nitrogenous oxide air pollution is already becoming the common difficult problem in the world and is one of the causes of ac...

氮氧化物污染已成为全球性共同面临的难题，是引起酸雨、温室效应和破坏臭氧层的主要原因之一。

And presents a non singular algorithm to deal with the difficult problem of the evaluation of the nearly strong singular and hypersingular integrals.

所以几乎强奇异和超奇异积分被化为无奇异的规则积分与解析积分的和，可由通常的Gauss数值积分解出。

In the algorithm of size normalization, eye location is an important and difficult problem.

尺度归一算法中，研究的重点和难点是眼睛的准确定位。

In the oil and gas production, the disposal of oily sewage is always a big and difficult problem.

在油气开采中，含油污水的处理一直是伴随油气生产存在的一大难题。

I have seen him solve one difficult problem after another.

我见到他解决了一个又一个难题。

How to standardize enterprise's behavior of accounting policy choice in order to realize the transformation from opportunism to efficiency has been a difficult problem in field of accounting theory.

如何规范企业会计政策的选择行为，实现其从机会主义向效率的转变，成为会计理论研究的一大难题。

How to realize the move of rural overspill, it is the great difficult problem of modernization.

如何实现农村过剩人口的转移，是现代化建设的极大难题。

The propagation of partially coherent beams through an apertured paraxial ABCD optical system is an interesting but difficult problem encountered in practice.

部分相干光通过受光阑限制近轴ABCD光学系统传输是实际工作中一个十分有意义却是很困难的问题。

For the particularity of the face image, face recognition is also the very difficult problem.

由于人脸图象的特殊性，人脸识别问题也是模式识别。。。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。