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Firstly, with Gaussianizing filter being defined explicitly, a practical method on filtering performance evaluation is given. Secondly, two typical Gaussianizing filters are studied. One is called the U-filter, based on the probability density function and its derivate. The other is called the G-filter, based on the cumulative distribution function and its inverse. After implementation, mechanisms and performances of each filter are contrastively discussed, an example with lake trial is illustrated.

本文给出高斯化滤波的定义和效果评价方法，然后对比研究了基于概率密度函数及导数的U滤波和基于累积分布函数及反函数的G滤波两种高斯化实现方法、原理与性能，并使用一组测试数据刚试了它们各自的高斯化效果。

The results show: Firstly, at degree 120, cumulative geoid height error is at the level of 17.616 cm with the adjusted accuracy of center of mass designed as 0 m, and errors come to 18.106 cm, 19.033 cm and 27.329 cm with the adjusted accuracy designed as 5×10-5 m, 1×10-4 m and 5×10-4 m, respectively.

结果表明：第一，在120阶处，当质心调整精度设计为0 m，恢复累计大地水准面精度为17.616 cm；当质心调整精度分别设计为5×10-5 m、1×10-4 m和5×10-4 m时，恢复精度各自降低至18.106 cm、19.033 cm和27.329 cm。

The author introduces the mainly practice of China on Amicus Curiae firstly and then on the standpoint of China in the bilateral, regional and multilateral situation, makes some suggestions respectively.

首先介绍并分析我国国内法律实践中出现的"法庭之友"现象，然后在双边、区域和多边三个层面提出我国在投资争端解决法庭之友问题上的立场和建议。

Firstly, an equivalent circuit for a common FCG is discussed and influences of FCG's design parameters on its current and energy amplification are obtained. Mechanism of various Ohmic and non-Ohmic flux losses is reviewed.

首先从FCG的基本原理和结构出发，通过等效电路模型，得到了FCG工作过程中各种参数对其电流和能量放大影响的一般规律。

Actually ,signals are processed from low frequency domain to high one by modulation firstly and alternating current amplification secondly.It can also improve anti-interference抗干扰 ability of circuit and signal to noise ratio of signals.

实际中往往采用更有效的先调制而后交流放大，将信号从低频区推移到高频区，也可以提高电路的抗干扰能力和信实际中往往采用更有效的先调制而后交流放大，将信号从低频区推移到高频区，号的信噪比。

To obtain the likelihood function indicating the uncertainty of observed information, noisy data is firstly expressed by a set of data vectors instead of a single vector, and then transferred to probability density curve defined in model space through confidence value defined in data space.

我们将数据向量的概念扩展为数据向量的集合，通过引入数据空间内的信赖度，把数据噪声转移到模型空间的概率密度函数上，即获得了反映数据本身的不确定性的似然函数。

Firstly, we make numerical modeling analysis with finite element method and eliminate the effect of tunnelcavity, translate the apparent resistivity curve of advanced detection in tunnel into the curve in full space.

首先利用有限元数值模拟技术分析并消除坑道空腔对视电阻率的影响，并将坑道超前探测视电阻率曲线转化为全空间视电阻率曲线。

This paper firstly reviews the history of inflation and employment in our country since 1979, revealing the research background, then introduces the normal instrument of research-Phillips Curve Theory, and sums up its development history in the West and its appliance in China.

本文首先对改革开放以来我国通货膨胀和就业历史情况进行了回顾，阐明了本文的研究背景，然后引入了研究通货膨胀和就业问题的常用工具——菲利普斯曲线理论，梳理了国外菲利普斯曲线理论的发展历程以及菲利普斯曲线理论在中国的研究进展。

Be established in the discussion of this regular, this paper firstly analyses the relationship between price changing and trade quantities minerals in the catalog of customhouse trade.

本文立足于对上述问题的研究，首先就我国海关贸易目录中64类矿产品从2001年到2005年20个季度的贸易量与贸易价格变化关系进行分析，结果发现"买涨卖跌"现象在我国矿产品贸易中的确普遍存在。

Firstly, it is a good way to cut down cost and improve efficiency.

首先，无人售票车是一种很好的降低成本、提高效率的方式。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。