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The cross-high-order-cumulant such as the cross-fourth-order cumulant is firstly proposed to measure the signal and for the first time prove that the CHOC can control the non-relevant noises and Gaussian noises. And based on the cross-high-order spectral Yule-Walker equations, the sinusoidal signal matrix is decomposed by the way of singular value decomposition method.

摘 要：本文以互四阶累积量为依据，首次证明了互高阶累积量可以有效地抑制非相关噪声和高斯噪声；并在建立互高阶累积量的Yule-Walker方程的基础上，通过该矩阵的奇异值分解，建立了信号矢量空间与噪声矢量空间；首次提出了混合噪声背景下正弦参数估计的互高阶谱Pisarenko方法。

Firstly, the dynamic behaviour of the system may be tailored by the particular choice of switching function.

第一，系统的动态性能适应于开关方程的特殊选择。

The major research results in this paper as following:Firstly, the paper has analyzed the choice of wavelet function and the algorithm of wavelet transform.

首先对小波函数的选择和小波变换算法进行了分析和研究。

Firstly, reviews the American blockbuster development the history, analyzes it from the theory and the practice to have the development inevitability, and elaborates the achievements of the American blockbuster from the cultural, artistic and commercial dimensions, and then reveals its external manifestations as an important cultural industry in the United States. Secondly, discusses choicely and emphases the successful elements of the American blockbuster: the operational ideas, marketing strategies and industry chain model, the three-parts binds into the indivisible entirety, which shows the internal motivation of its continuing development. Thirdly, analyzes our country movie's development present situation, and elaborates its exist deficiency, and inspects and analyzes the question which existed in the practice development, which will provide the theory and the practice foundation for as follows. Finally, combines the analysis and understanding of the American blockbuster in theory and the current development situation of the domestic film, it puts forward several noteworthy viewpoints about the future development of China's film industry.

首先，以考察的眼光回顾美国大片发展的历史，从理论和实践上分析其发生发展的必然性，并分别从文化、艺术、商业三个维度阐述了它所取得的成就，揭示了它作为美国重要文化工业的外部表现形态；然后，有选择有重点的论述美国大片具有的成功元素：制作中的运作理念、发行中的营销策略及其产业链模式，这三者联结成一个不可分割的整体，透析出美国大片得以不断发展的内在动因；接下来，分析了我国电影的发展现状，阐述了其存在的不足之处，考察和分析了在实践发展中存在的问题，为下文提供了理论和实践基础；最后，通过对美国大片在理论上的探析与把握，结合当下国内电影发展状况，提出了我国电影产业在未来的发展中值得注意的几点看法。

Cholecystokinin , firstly identified as a gastrointestinal peptide, is wildly distributed throughout the centr...

CCK是一类典型的脑肠肽，在中枢神经系统以神经递质或调质的形式，通过其受体发挥重要作用。

This paper firstly indicates the shortages of the method for identifying tendency of spontaneous combustion of coal by oxygen adsorption with chromatograph in China.

本文首先指出了我国现行的煤自燃倾向性色谱吸氧鉴定法的不足之处，同时给出了煤自燃倾向性鉴定标准的基本原则。

Firstly, due to scale limitations, the cockpit sits only one action figure. Secondly, an added play feature makes the Outrider quite similar to the B-wing fighter, with its cockpit and centerline being able to rotate around the rest of the saucer. The toy ship also has a port-mounted weapons pod, and is more yellow than chrome in color.

首先由於尺寸限制，驾驶舱只能容纳一个人偶；其次为了增加先驱者号的特色类似B翼战机，所以驾驶舱和中央部位可以从碟状机身分离而旋转，且有个左舷的武器舱，机体比原本更有铬黄的颜色。

Firstly put some silver cleaner on a cotton pad and use it on the chronometer.

先在物品栏里把棉垫和银器清洗剂组合，用在表上。

The cicerone firstly found an area for us and the organizer prepared many rich and colorful games which practised our members in different directions.

首先，二龙山的导游为我们找到了一块空地，以便我们进行团队训练。

Firstly, the stability of the circadian system model without light is analyzed.

首先分析了无光照昼夜节律模型的稳定性。

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。