激波

It is very valuable to study the characteristic of dust explosion detonated by shock wave, and to find out the influencing factor of explosion characteristic for the safety in production of industrial department, such as coal mine.

研究激波诱导条件下粉尘爆炸的特性，找出影响其爆炸特性的因素对于解决煤矿及其它工业部门亟待解决的安全生产问题具有重要的现实意义。

Hot firings show that the frequency of the oscillating shock is close to the acoustic frequency .

热试结果表明，振荡激波的频率与声频相近。

Comparisons of experimental data including from rapid compression machine, shock tube and HCCI engine with computational results through five different iso-octane reaction mechanisms indicate that different mechanisms from different experimental conditions are presented.

采用零维单区模型，通过5种不同反应机理的计算与速压机、激波管和HCCI发动机等实验数据的比较发现，各反应机理在不同实验状况下性能各异，在此基础上提出了构造适用于HCCI燃烧过程的异辛烷简化机理的必要性。

Finally, the numerical investigation of shock wave compression passage and the analysis of flow characteristics are performed and it is concluded that the pressure ratio of single stage may be equal to nine.

最后，通过对激波压缩通道进行了流场数值模拟，对其流道内的气动特性进行了分析，得出其单级压比可以达到9，充分显示出其优越的高压比特性。

The central inner gear theory equation and tooth profile work equation with two-teeth difference cam profile rolling movable teeth were deduced, and in the consideration of central gear influenced by several parameters, the central gear tooth profile modification mode was analyzed and synthesized roundly.

推导二齿差凸轮激波滚动活齿传动的中心内齿轮理论方程及工作齿形方程，在给出考虑各参数影响的中心轮修形通用方程的基础上，较为全面地对中心轮齿廓的几种修形方式进行分析和综合。

A dynamic simulation mathematic model consisted of conservation equations of mass, momentum, energy, superheat steam equation, pressure drop equation, two-phase flows equations and relations before and after oblique shock.

建立了由两相流体质量守恒方程、动量守恒方程、能量守恒方程，过热蒸汽关系式、压降关系式、激波前后关系式及其它两相流关系式组成的动态仿真数学模型，模型形式为非线性方程组。

Results show that the performance of this VCRT basically reaches the original objective,which indicates that a convergent-divergent blade passage in the high pressure rotor and a convergent-divergent meridian plane of the VCRT are suitable for the VCRT.

结果表明，对转涡轮各方面性能基本达到了设计目标，说明高压动叶采用收扩型叶栅通道且整个涡轮子午流道也采用收扩结构的设计可以获得满意性能；三排叶片仍有改进余地，即涡轮效率还有进一步提升的潜力；高压动叶出口沿整个叶高均为超声速，出口马赫数节距平均值在1.4~1.6之间；高压动叶尾缘斜激波强度以中展为中心向两侧递减；涡轮性能随出口背压的增加而下降；涡轮出口背压的变化对高压转子性能基本没有影响，但对低压转子性能的影响较大。

Acoustic position ; shock wave ; trajectory vector

声定位；激波；弹道矢量

In this paper,the influence of oblique shot on time-lag estimation is studied.

在一些射击场合中，弹丸与靶平面并不一定垂直，这时，利用弹道激波测量弹着点时，就需要考虑弹丸斜入射带来的影响。

An explicit analytical solution of 1-D unsteady perfect gas flow with shock and areachange is derived.

据作者所知此解是不定常带激波流的第一个显式解析解。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！