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Thermogravimetric results indicate that the IFR takes part in the decomposition reactions of PP and promotes it to carbonize as the IFR PP undergoes heating and burning. Elemental analysis and infrared spectrum of the burnt residues and swollen char reveal that the phosphorus is m...

元素分析和红外光谱结果表明，IFR－PP受热燃烧时磷主要积聚在燃烧端面并以磷酸及其相应的铵盐存在，它们的形成与IFR受热燃烧时的一系列变化有关，并有助于焦化物的进一步炭化和提高材料的阻燃性能。

A preliminary study on the decomposition and insect community succession of pig carcase was carried out in Hangzhou District.

对杭州地区猪尸体的腐败过程及尸体上昆虫群落的演替规律，进行了初步观察和研究。

The results show that ammonium carnallite will change to dehydrated ammonium carnallite by heating from 110 ℃ to 180 ℃ for controlling dehydration time. But the hydrolysis takes place when temperature is higher than the above temperature. Dehydration process includes dehydration, hydrolysis and thermal decomposition.

研究结果表明：铵光卤石在热空气中脱水是分步进行的，包括脱水、水解、热分解等化学反应；在110~180 ℃控制脱水时间可得低水合铵光卤石不水解，超过此温度范围时铵光卤石在脱水的同时会部分发生水解。

The relationship between magnesium chloride concentration with density and salinity were analysed respectively, which showed a theoreticl basis for crystallization automatic control of carnallite cold decomposition process.

研究了不同温度下，低钠光卤石分解过程分解液中氯化镁含量、密度、盐度随时间的变化规律，分析了分解液中氯化镁含量与密度、盐度之间的关系，为低钠光卤石分解制备氯化钾结晶过程自动控制提供了理论基础。

The wavelet analysis can divide signal into different frequency bands and carry out inchoate signal decomposition and extracting.

小波分析能将信号划分到不同频段内，实现微弱故障信号的分离和提取。

Using the characteristics of multi-resolution of wavelet packet we carry multi-scale decomposition on voice signal.

2为了模拟Mel倒谱滤波的过程，利用小波包多分解的特性，对语音信号进行多尺度的分解。

The seedlings of Catalpa ovata G had more effect than that of Gleditsia japonica Miq on the decomposition rate of pollutant at low pollution level.

在低污染水平，梓树苗木对污染物降解的贡献大于山皂荚苗木。

For example, compounds containing phosphorus are converted to acidic materials which catalyze the thermal decomposition of the polymer.

例如，含有磷的化合物可以转变成酸性物质，它会催化聚合物的热分解。

The main jobs of the paper are as follows, Multi-scale decomposition and reconstruction of wavelet transform is utilized to filter the noise of negative-pressure-wave, which is brought by leakage. With the capacity to detect the signal singularity quickly and accurately, wavelet transform was used to catch the break point of pressure signal. Accordingly, the work improved the location accuracy.

主要研究工作有：利用小波变换的多分辨率分解和重构技术，对采集到的管道泄漏产生的负压波信号进行消噪处理，并对几个影响消噪质量的关键因素及其选取方法进行了分析；再利用小波变换技术对信号奇异点的快速、准确的识别能力，对经消噪后的负压波信号进行奇异点捕捉，从而实现更精确的单条燃气管道泄漏定位。

This paper combines with pipeline delivery of our countrys actual conditions and other methods of detection and location. To the leakage characteristic of the fault to the long-distance natural gas pipeline, a method is raised, which is on the basis of wavelet and negative-pressure-wave to detect the leakage and locate. Jobs in this paper are as follows:Multi-resolution decomposition and reconstruction of wavelet transform is utilized to filter the noises, which the leakage brings the noises of negative-pressure-wave. The research is worked in the wavelet and wavelet packet filter. The wavelet transform have a fast and accurate recognition capability to signal singularity. This paper chooses wavelet technology to catch the break point of pressure signal.

本文结合我国管道输送的实际情况和目前现有的各种泄漏检测与定位方法，针对天然气长输管线泄漏故障的特点，提出了基于小波分析和负压波相结合的方法检测泄漏并定位，其中主要进行了以下几个方面的工作：利用小波变换的多分辨率分解和重构技术，对采集到的管道发生泄漏时产生的负压波信号进行降噪处理，并对小波及小波包优化的降噪效果进行对比性研究；利用小波变换技术对信号奇异点的快速、准确的识别能力，捕捉负压波信号的突变点，从而判断是否有泄漏发生。

Finally it offers the analysis of the fault-tolerance system as well as its test verification.

这样，运行于空间环境中的系统的设计目标就是在保证系统实时性

However, it is still difficult to find out the real reason of the increase of the keratinized gingiva during the orthodontic extrusion whether it is due to the proliferation of the gingival tissue or to its elastic nature, that is because the proliferation of the fibroblasts as well as the connective tissue changes in volume and the intra-fibers spaces were all immeasurable in most of the studies.

然而，仍然难以找到真正的原因增加的角化牙龈在正畸挤压它是否是由于扩散的牙龈组织或其弹性性质，这是因为增殖的成纤维细胞以及作为结缔组织的变化量和内部纤维空格都是不可估量的，大多数的研究。