在困难中

They had met unconsiderable hardship when doing the experiment.

在他们进行实验的过程中，出现了意想不到的困难。

In the 1990s, a more complete theoretical system - the achievement of statistical learning theory and neural networks, and other than because of the emerging machine learning methods of the difficulties encountered some important, such as how to determine the issue of network structure, overfitting and underfitting, the local minimum points ect, makes the rapid development and improvement of SVM in resolving the small sample, non-linear and high-dimensional pattern recognition problems in the performance of many unique advantages and can function to promote the use of fitted function and other machines learning problems.

上世纪90年代，一个较完善的理论体系--统计学习理论( Statistical Learning Theory，简称SLT)的实现和由于神经网络等较新兴的机器学习方法的研究遇到一些重要的困难，比如如何确定网络结构的问题、过学习与欠学习问题、局部极小点问题等，使得SVM迅速发展和完善，在解决小样本、非线性及高维模式识别问题中表现出许多特有的优势，并能够推广应用到函数拟合等其他机器学习问题中。

During the establishment of sediment yield dynamic model at the watershed outlet, it was difficult for us to carry out dynamic monitoring of each impact factors in the whole basin, because it was a long time research and was in very large-scale watershed. Taking into account the interannual variability of sediment yield mainly affected by hydrological conditions of rainfall - runoff and underlaying surface changes caused by soil conservation measures, a combined influence factor which is related to surface runoff modulus and the implementation time of the water and soil conservation project was proposed for the first time. Furthermore, its specific expression was determined through dimensional analysis and non-linear regression multianalysis.

在流域输沙量动态模型的建立中，由于研究时段长、研究流域尺度大，对输沙量各影响因子进行全流域逐年动态监测十分困难，考虑输沙量的年际变化主要受降雨-径流水文条件和水土保持措施等土地管理活动的影响，首次提出与地表径流模数和治理时间相关的综合影响因子，并通过因次分析法和二元非线型回归法确定了具体的表达式。

In the process of their erperiment,some unexcepted difficulites arosed

在他们进行实验的过程中，出现了意想不到的困难。

There appeares unexpectable difficulties during their experiment progress.

在他们进行实验的过程中，出现了意想不到的困难。

When they do the experiment, occuring unexpecting problem.

在他们进行实验的过程中，出现了意想不到的困难。

On the base of reviewing the development of NSP models, some deficiencies of existent models are analysed and listed as follows: most models can be applied only to very small watershed; mechanism models involve too many parameters which can not be calibrated properly by limited data; amoung practical models, empirical models are much more common than mechanism models; most models are focus on the conservative soluble pollutants rather than non-conservative and particulate pollutants; almost all models rely highly on the measured data, and there are fewer studies about the load estimation for ungauged areas.

本文在评述非点源污染模型研究进展的基础上，分析了现有模型的不足，主要有：大多数模型只能适应于很小的流域面积；机理类模型参数过多，率定困难，应用效果不理想；实用模型中，经验类模型多，机理类模型少；对保守性的液态污染物研究得较多，对非保守性和固态污染物研究得较少；各类模型均高度依赖于实测资料，无资料地区的模型或预测方法研究得很少。

The currency's issue in Jiangxi's also ungeared to it's circulation, which played a bad effect to its trade and people's living. The new financial system in Jiangxi gradually consummated since 1930s, then Jiangxi's currency system got unification at the same time.

江西地方货币的推广困难与传统乡村体系的势力强大和新式金融组织缺失密切相关。1930年代以来，随着江西新式金融体系的完善和渗透，在金融转型的过程中也完成了江西货币的统一。

The currency's issue in Jiangxi's also ungeared to it's circulation, which played a bad effect to its trade and people's living. The new financial system in Jiangxi gradually consummated since 1930s, then Jiangxi's currency system got unification at the same time.

江西地方货币的推广困难与传统乡村金融体系的势力强大和新式金融组织缺失密切相关。1930年代以来，随着江西新式金融体系的完善和渗透，在金融转型的过程中也完成了江西货币的统一。

The currency's issue in Jiangxi's also ungeared to it's circulation, played a bad effect to its trade and people's living. The new financial system in Jiangxi gradually consummated since 1930s, then Jiangxi's currency system got unification at the same time.

江西地方货币的推广困难与传统乡村体系的势力强大和新式金融组织缺失密切相关。1930年代以来，随着江西新式金融体系的完善和渗透，在金融转型的过程中也完成了江西货币的统一。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。