查询词典 LPG

Premise Liquefied petroleum gas is derived from oil gas, natural gas, the gas production of refinery and petrochemicals. The main components are dimethylmethane, propylene, butane, butylene and such low class hydrocarbon. It's a gas with achromaticity and transparence; LPG is hardly dissolved in water, but dissolved in ethanol and aether, it can dissolve gas production, propagation oil and caoutchouc.

液化石油气（liquefied petroleum gas，LPG）是石油伴生气、天然气、炼油厂及石油化工厂的气体产品，经分离精制而来，其主要成分为丙烷、丙烯、丁烷、丁烯等低分子烃；无色透明，带有微弱的臭味；难溶于水，溶于乙醇和乙醚等，并能溶解石油产品，动植物油和天然橡胶。

The paper takes SANTANA LX car as research object and gets the best ignition timing from bench test when running on LPG.And an ignition system is developed whose ignition timing can be switched automatically when engine change to different fuels.Both bench and road tests show satisfactory results

本文以桑塔纳LX型轿车发动机为对象，通过台架试验得出燃用LPG时的最佳点火提前角，在原车点火系统的基础上，研制出一套能根据不同的燃料自动切换点火提前角的点火装置，该装置在台架和整车道路试验中都获得较好的结果

The fuel of simulation is only butane instead of LPG.

在Fortran平台下编写LPG的物化特性(0～5000K)。

So how to improve LPG professional management level and crewman's technical force become extremely urgent big problems in short term.

因此，如何在短时期内全面提高LPG船舶公司的专业管理水平和船员的技术力量就成了迫在眉睫的大问题。

The property of dimethyl ether is compared with that of LPG and natural gas,and the feasibility of using DME as city gas is discussed.

进行了二甲醚与LPG和天然气的性质比较，探讨了二甲醚作为城市燃气的可行性。

City and town gas design specifications prescribe that LPG pipeline is forbidden to lay in the basement, semibasement or inner equipment.

LPG易燃，易爆，且重度比空气大，易聚集在最低点，在《城镇燃气设计规范》种铭文规定LPG管道不准敷设于地下室，半地下室或设备层内。

In order to research the spray of LPG/diesel mixed fuel, it is the first time that this work studied the atomization characteristics of LPG/diesel, including spray angle, droplet size distribution, mean diameter, typical diameter, diffusion degree and impenetrate distance by using a high spatial resolution digital camera. At the same time, comparison of these characteristics of diesel and two kinds of LPG/diesel mixed fuel was taken.

为了探讨LPG／柴油混合燃料喷射的雾化效果，本文首次采用高分辨率数码照相机试验研究了柴油和LPG／柴油混合燃料的喷雾特性，包括喷雾锥角、贯穿距离、液滴尺寸分布、平均直径、特征直径和发散度和对雾化效果的影响；并比较了纯柴油和不同混合比例的LPG／柴油混合燃料的雾化特性，结果表明：柴油中掺混一定量的LPG有利于改善雾化。

Analytical formulae are presented for the first time to describe the shift in the resonance wavelength of LPG in response to etching of the fiber cladding or a change in the external refractive index. The accuracy of the formula is confirmed by comparision with numerical simulations and experimental results. We demonstrated that the resonance wavelengths of an etched LPG are more sensitive refractive index than those of an unetched grating. The bending properties of long period fiber grating written in different type fiber are studied experimentally. The transmission peaks and the central wavelength of LPG change with the bending of the fiber. A new peak appears at the shorter wavelength when the fiber is being bent. The changes of the peaks are different for different photosensitive fiber. Those properties have broad application foreground in fiber sensors and tunable filters.

分别从理论和实验上对长周期光栅的折射率特性以及光纤包层半径对长周期光栅特性的影响进行了研究，首次给出了描述光纤包层半径腐蚀和外界折射率改变与长周期光栅共振波长关系的理论表达式，实验与理论和数据模拟的结果很好符合，利用腐蚀光纤包层的方法可以有效地提高LPG的折射率灵敏度；对不同光纤中写入的长周期光栅的弯曲特性进行了实验研究，LPG的透射峰形状及其中心波长随光纤弯曲而发生变化，并且随着弯曲将在短波方向出现新的透射峰，其透射峰的变化规律因所用光敏光纤的不同而不同，这一特性在光纤传感和可调谐滤波器方面有重要的应用前景。

LPG consists principally of the C3/C4 hydrocarbons, propane, propene and butanes, butenes respectively--together with minor proportions of ethane and pentanes.

规范通常将LPG分为三个等级：LPG丙烷、LPG丁烷和LPG混合物，对它们的组成和性质有严格的定义。

The effects of different compression ratios and spark advance angles on the performance and emission of the LPG engine were studied. Through the designed control system, the quantity of injected LPG and ignition timing in different operations can be controlled automatically.

借助设计的控制系统实现了发动机各个工况下喷气量和点火定时的控制，并通过试验对发动机燃用汽油和LPG两种情况下的性能进行了对比分析。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了