那个由电池控制的化学火焰的象征意义何在？
And what is the symbolic significance of a battery-operated chemical flame, anyway?
我们曾试着燃烧化学物质，观察火焰的颜色。
We once tried to burn the chemicals and watch the colors of the flames.
不同的化学物质会产生不同颜色的火焰，包括亮橙色和深绿色。
Different chemicals produced different colors of flames, including bright orange and dark green.
普氏火柴的核心设计是，在微小的玻璃容器内装入硫酸，周围固定好其它所需化学物质，硫酸一旦释放，便能形成火焰。
The core of the promethean match was sulfuric acid in a tiny glass container which was surrounded by chemicals and materials calculated to burst into flames when the acid was released.
这些火焰尽管比较原始，但是火力惊人，与他们体形更大的亲戚不同的是，他们并不携带化学武器弹。
These are awesome if primitive systems and unlike their larger cousins probably do not have chemical weapons rounds.
然后用喷砂、火焰或化学方法处理，提高表面活性。
Then sandblasting, flame or chemical means, and improve the surface activity.
本文使用详细的化学反应机理模拟了C2H6／O2／N2／AR层流对冲扩散火焰中多环芳烃的生成动力学过程。
This paper simulated polycyclic aromatic hydrocarbons formation in C2H6/O2/N2/AR laminar opposed flow diffusion flame using detailed chemical kinetic mechanism.
进行可能会产生热量和火焰的操作时，一切易燃品(如所有化学品、油类等)必须移至远离操作地点的、足够安全的地方。
While executing operations that may cause heat and flame, combustibles (like all chemicals, oil etc.) should be kept a distance safe enough away from the worksite.
火源生成的火焰区是燃烧引起的化学反应区域。
The flame area which has developed from the fire source is an area of chemical reaction caused by combustion.
固体火箭发动机的点火是一个十分复杂的物理化学过程，包括三个阶段：点火延迟、火焰传播和燃烧室气体充填。
The ignition of the solid rocket motor (SRM) is a very complex physical and chemistry process, which is composed of three component phases: ignition delay, flame spreading and chamber filling.
利用化学反应动力学机理研究了甲烷-空气预混火焰添加H2的着火和燃尽特性。
This paper studied ignition and burnout characteristics of methane-air premixed flame with H2 added, using chemical reaction mechanism.
在气体火焰的碳黑生成模型中，运用化学动力学来诠释在层流预混火焰中大分子芳香族烃的形成。
In the former one, the formation of high molecular weight aromatic species in premixed flames are explored by a detailed chemical kinetic mechanism.
在加利福尼亚州美国化学学会全国会议上发言的研究人员们说，未来的消防队员可能采用电冲击来处理凶猛的火焰。
Future firefighters could tackle raging blazes with a blast of electricity, said researchers speaking at the National Meeting of the American Chemical Society in California.
硫磺常用于医药和化学工业，它燃烧时发出光亮的火焰和浓烈的气味。
Sulphur, burning with a bright flame and a strong smell, is often used in medicine and chemical industry.
用化学反应速率和温度分布随时间的变化情况详细描述了预混火焰在微型圆管中传播的三种情况。
These behaviors have been described in detail by the contours of rate of reaction and temperature at different time.
定义火焰特征反应时间来反映火焰的化学反应动力学和火焰流场流动动力学特性。
The reactivity time scale of the vortex is defined to describe the chemical reactivity dynamics and the flow dynamics of the flame.
同时，还分别利用红外气体分析仪、火焰离子探测器和化学发光分析仪对相同样气中的一氧化碳、碳氢和氮氧化物的排放特性也进行了测量。
Coupled with this, emissions of carbon monoxide, hydrocarbon and nitrogen oxide are also measured with an infrared analyzer, a flame ionization detector and a chemiluminescent analyzer respect...
从化学计量向贫燃料状态靠近时，预混火焰强度减弱，火焰传播速度减小，锥形火焰面逐渐增高，退到流速较低的下游区域；
When the CH4-air mixture approaches the lean fuel state, the flame speed accordingly decreases, the flame cone rising and retreating downstream to the area with lower flow speed.
对带V型火焰稳定器的模型燃烧室中气液两相化学反应流动进行大涡模拟（LES），研究中采用了欧拉-拉格朗日方法。
The gas-droplet two-phase reacting flow in a model combustor with the V-gutter flame holder is studied by an Eulerian-Lagrangian large-eddy simulation (LES) approach.
对带V型火焰稳定器的模型燃烧室中气液两相化学反应流动进行大涡模拟（LES），研究中采用了欧拉-拉格朗日方法。
The gas-droplet two-phase reacting flow in a model combustor with the V-gutter flame holder is studied by an Eulerian-Lagrangian large-eddy simulation (LES) approach.
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