The standard deviation of four-nozzle impinging flame noise was greater than that of the two-nozzle impinging flame noise, but the change of the standard deviation was the reverse.
四喷嘴工况的撞击火焰噪声的标准偏差值要大于两喷嘴，但标准偏差随工况的变化小于两喷嘴，说明四喷嘴撞击火焰燃烧剧烈但稳定。
Combustion of powdered coal in furnace is a very complicate suspension firing process. Noise interference must be overcome to achieve clear image of flame monitoring system.
锅炉中煤粉的燃烧过程是非常复杂的悬浮燃烧，炉膛火焰监视必须克服监视图像的噪声。
The rocket exhaust plume causes the effects of noise, smoke, flame and heat radiation, environment pollution and signal attenuation, etc. So it is important to study exhaust plume.
火箭羽流会造成噪声、烟雾、热辐射、环境污染和信号衰减等多种效应，因此研究排气羽流问题至关重要。
They shall leap like the noise of chariots upon the tops of mountains, like the noise of a flame of fire devouring the stubble, as a strong people prepared to battle.
牠们跳跃，发出有如战车越过山巅的辚辚声，发出有如烈火焚烧稻草的爆裂声，活像一支严阵以待的强大军旅。
Sandwich type panel structure, the middle of flame retardant and heat insulation and noise reduction material, has the fire performance of A0 class.
三明治夹层式面板结构，中间加阻燃隔热降噪材料，具有A 0级防火性能。
The noise-deadening property, flame retardant and physical property of this composite fabric are also analyzed. The fabric is of excellent noise-deadening and good processability, etc.
并对其阻燃、隔声及其物理机械性能进行测试，表明其具有隔声效果好、阻燃、质轻、强度高、加工性好、易裁剪等优良特性。
An onlooker said he heard a loud noise from a transformer and then a flame emerged.
一位目击者说，他听到变压器处传来一声巨响，然后出现一团火光。
An onlooker said he heard a loud noise from a transformer and then a flame emerged.
一位目击者说，他听到变压器处传来一声巨响，然后出现一团火光。
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