绝

Introduces and analyses the calculating softuare of steam parameters and enthalpy drop of adiabatic expansion.

介绍与分析水蒸汽参数和绝热膨胀焓降的计算软件。

A two-steps numerical method has been used to deal with this process. In every computation time-step, two phases are used: the first one is the adiabatic expansion and cracking phase; the second one is the phase of absorbing laser energy.

采用两步数值计算方法处理等离子体微滴的爆炸过程，即在每一个数值计算时间步长内，将爆炸过程分为两步，第一步处理微滴的绝热膨胀及裂解过程；第二步处理微滴对激光脉冲能量的吸收过程。

The so-called "adiabatic expansion" means that the light generated by the acoustic signal in the absorption within the region transit time under the same conditions are far greater than the time required for thermal diffusion, negligible effect of the proliferation of light signal the impact of this Conditions, acoustic imaging to short-pulse laser for excitation, ultrasonic signal for the information to the carrier, with high-resolution and high-contrast imaging features.

所谓的"绝热膨胀"是指所产生的光声信号在吸收区域内的渡越时间远远大于相同条件下热扩散所需的时间，可忽略热扩散效应对光声信号产生的影响，在此条件下，光声成像以短脉冲激光为激励源、以超声信号为信息的载体，具备高分辨率和高对比度的成像特点。

Four facts about this belt are analyzed in this work:(1) typical mantle metasomatism existing in the volcanic rocks and in their inclusions,(2) the distribution range of the Krich volcanic belt estimated according to the K2O/Na2O ratio of the volcanic rocks,(3) the "cold spring and taele phenomenon" caused by adiabatic expansion of the mantle gases, and (4) the current situation of seismic activities.

文中重点论述了以下4点内容：(1)火山岩及其包体中存在典型的地幔交代作用；(2)根据火山岩K2O/Na2O比值勾画出富钾火山岩带范围；(3)地幔气体的绝热膨胀导致"冷泉和冻土现象"；(4)地震活动的现状。

Large rare gas clusters of Ar〓, Kr〓, and Xe〓 and hydrogen clusters were produced in the process of supersonic adiabatic expansion. Rayleigh scattering method is used to diagnose the cluster size.

大尺寸惰性气体原子团簇和氢分子团簇喷流的制备和诊断利用高背压惰性气体和高背压低温氢气经锥形喷嘴向真空超声绝热膨胀来产生团簇，用Rayleigh散射方法诊断团簇尺寸及团簇喷流的时间特性。

Using pure air as working substance, the temperature drop between the inlet and the out gases is 63.6 K and the adiabatic expansion efficiency higher than 40%is achieved.

利用空气作介质，系统进出口湿降为63.6K，绝热膨胀效率可达42％。

The second part of the 19th century witnessed several major discoveries in the field of cryogenics, including adiabatic expansion systems for cooling gases, that led to the liquefaction of oxygen, air, and nitrogen, vacuum flask, which facilitated storage and handling of liquefied gases and the Joule-Thomson effect to produce continuously operating air liquefiers, triggered a resurgence of cryosurgery

19世纪后叶，低温学领域有几项重要发现，包括将纯氧、空气和氮气液化绝热膨胀系统，能储存和处理液化气的真空瓶，以及应用Joule-Thomson 效应产生持续液化气体流，这些均促进了冷冻疗法的发展

As aconsequence, the overall physical parameters of the CSR electroncooling system are given. Also, the key device------the electron gunare designed, and the adiabatic expansion scheme are proposed.Additionally, resolution limits of the cooled heavy ion beam in thestatic operation condition and an internaltarget experiment are analysized quantitatively. Furthermore, the beamloss and the lifetime are studied systematically. As a result, therequirement on the CSR vacuum conditions and the allowablethickness of the internal target are determined.

完成了CSR电子冷却装置的总体物理参数和关键部件-------电子枪的设计，并提出了在CSR上采用绝热展开技术；完成了重离子冷却储存环上束流储存寿命的系统研究，从而提出了CSR应具备的真空条件和允许的内靶厚度，并由此得到了CSR准连续束模式下的内靶实验亮度；此外，对CSR重离子束的分辨率极限作了定量的分析。

The homogeneous nucleation rate, saturation rate, and droplet growth equation at state 250K、100Kpa for pentone affected by single expansion wave has been obtained in the joined international cooperation research. Results exposed that temperature decrease in the homogenous nucleation and condensation is the preponderant factor in unsteady adiabatic expansion process.

参与同质核化率实验的国际合作研究，获得250K、100KPa状态附近戊醇在单脉冲膨胀波作用下的同质核化率、饱和度及同质核化微滴在低压状态中长大状态方程；研究表明非定常绝热膨胀过程中，降温因素在同质核化和凝结过程中占主导作用。

In an adiabatic process no heat is allowed to enter or leave the system.

在绝热过程中，不容许热量进入或离开系统。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。