查询词典 liquefied petroleum gas

The dense gas surrounding the star is shaping the castoff material into a bubble.

包围星星的稠密气体是由被丢弃的物质形成泡泡。

Papermaking industry lets out the castoff, wastewater and exhaust gas, which will lead environment pollution.

毕业论文页数：84 字数：44494摘要：造纸工业三废排放导致的环境污染，其中以水污染最为突出。

The LEL sensor depend on catalyzer that can burn in the condition with combustible and O2 gas.

LEL的传感器中的催化剂有可能在有可燃气体和氧气的环境中燃烧。

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。

In chapter 3,we consider the Cauchy problem of transportation equation 〓Which is referred to as the simplification model of gas dynamics equations with constantpressure,and prove the existence and uniqueness of weak solution.

在第三章，我们考虑了运输方程〓，2的Cauchy问题，并且证明了广义解的存在性。最后，我们考虑下列二维Cauchy问题〓通过引进新的广义解定义，证明了解的存在唯一性。这个解可能含〓波。

Do not have caustic gas to rolled steel.

对钢板无侵蚀性的气体。

This thesis is based on experiments. By the way of solution experiment and gas experiment I study mechanism invalidation with the two filter materials in the condition of causticity.

论文实验为主，采用了溶液实验法和气体实验法对两种滤料在腐蚀性物质中老化失效的过程进行了研究。

It is physiological innocuity material,amity to environment,and the most importance is no second pollution when burning that means no emission noxious and causticity gas.

最大的优点是不产生有毒的和腐蚀性的气体，属生理无害物质，对环境友好。

The nozzle is subjected to the cautery and concussion of the hot gas and complex mechanical loads in the process of working.

喷管在工作过程中既承受着高温热载，又经受燃气冲刷及各种复杂的机械载荷。

Nozzle is one of the most important components used in SRM. The nozzle is subjected to the cautery and concussion of the heat gas, so the thermal effect and related thermal-structure couple effect to the nozzle structure become the important factor affecting the load carrying capability of the nozzle. Well, the following investigation contents are accomplished in this paper.

喷管是固体火箭发动机关键部件之一，喷管在工作过程中承受着高温燃气的烧蚀和冲刷，所产生的热效应和由此带来的热—结构耦合效应已经成为喷管强度和稳定工作必须考虑的重要因素。

According to my definition, the Manchurian Candidate is an experimentally created dissociative identity disorder that meets the following four criteria

根据我的定义，满州候选人是一个创造分离身份混乱的实验，它符合下述的4条标准

I'd be chuffed to play at a World Cup, but I have many years ahead of me in the game so I hope to have more opportunities.

我会chuffed发挥在世界杯，但我有很多年的比赛在我前面，所以我希望有更多的机会。