Catastrophe analysis of airflow reversal for descensionally ventilated mine fire;
矿井火灾下行风流逆转的突变动力学分析
A qualitative analysis and computer simulations show that airflow reversal can occur in a non-diagonal airway parallel to the airway on fire in a horizontal ventilation network due to the pressure increase induced by cooling of fume in the airway connected in parallel to the non-diagonal airway but in series with the one on fire.
通过定性分析和计算机模拟发现 :在水平网络火灾中 ,非角联旁侧分支也能发生风流逆转 ,引起逆转的动力是与该分支并联但与着火分支串联的分支中的冷抽力 。
The unsteady state 1 D momentum equation is applied to the analysis of the condition of airflow reversal in parallel airway during a mine five in ascensional ventilation.
采用一维非稳态运动方程对上行风流火灾旁侧支路风流逆转的发生条件及影响因素进行了分析；指出了布德雷克（静态分析）法的局限之处，即没有正确认识到巷道长度及初始风速对风流逆转的影响；进一步阐明了导致这种局限的原因是由于忽略了风流的惯性。
The formation of geostrophic wind and cyclone is simulated successfully.
在一般格子Boltzmann的基础上,加入了科氏力和重力,用流体柱高度代替一般模型中的密度,避免了不可压缩流动计算的困难,并用这一改进的模型成功地模拟了地转风和气旋的形成过
This paper introduces and automatic method to judge geostrophic wind principle and its application in weather analysis.
提出一种在计算机上自动判定地转风原则的简易方法，并介绍了该方法在天气分析系统中的应
In addition,the inherent relation of the succesive torrential rain with low level jets and their ageostrophic winds is also analyzed.
通过对桂林“９８６”连续大暴雨的形势分析， 揭示了这次过程的大环流维持机制， 暴雨得以维持的主要原因； 另外， 分析了连续暴雨与低空急流及其非地转风存在的明显内在联系。
Validation of FDS for the flow reversal in bypass branch during ascensionally ventilated fire
上行通风火灾旁侧支路风流逆转FDS模拟研究
Experimental Study of the Sequence of Flow Reversals in Accessional Airways Parallel to a Fire
并联旁侧支路风流逆转次序的实验研究
counter-current airing
对流通风,逆流通风
Capital flow reversion risks, impacts and long-term prospects;
近期我国资本流动逆转风险、影响及长期展望
The tide of the battle would turn.
作战的风向就会逆转。
The lapse of time is irreversible.
时光流逝不可逆转。
irreversible momentum toward revolution.
不可逆转的革命潮流。
The trend of relaxation is unreversable.
缓和的潮流不可逆转。
To shift to a counterclockwise direction. Used of the wind.
逆时针转向转变为逆时针方向。用于指风
Numerical simulation of backward flow of methane roof layer in an airway
巷道风流中瓦斯逆流现象的数值模拟
(3) the current solutions here have spiral structure like the Ekman model, but for the strong sea state there is obvious counter wind current which almost vanishes in the weak state case.
(3)强海况下,有明显的逆风流,而在弱海况下,几乎不存在逆风流。
The sailors have the hardest time when going about.
水手们逆风转向时十分艰苦。
Detection of rubella virus gene sequences by RT-nested PCR
用逆转录套式PCR检测风疹病毒RNA
and rounded to ponderously and with laborious pomp and circumstance --
吃力、做作地转了船头使船逆风停下??
The Risk Analysis and Countermeasure Research of Reverse Logistics Outsourcing;
逆向物流外包的风险分析与对策研究
Analyzing on the Risk of Converse Selecting and the Loss of Tax Revenue;
纳税人逆向选择风险及税收流失分析
Study on Process and Performance of Reverse Flow Mechanical Ventilation Cooling Tower
逆流机力通风冷却塔工艺性能的研究
Study on Structure Optimal Design of Counter-Current Rotating Packed Bed;
逆流式旋转填料床结构优化设计研究