The effects of igniting energy for the methane flame propagating velocity with the weak igniting are discussed in the text.
讨论了在弱点火下点火能对瓦斯火焰传播速度的影响。
For the present experimental conditions, it is found that the flame propagation velocity is a weak function of dust concentration in cornstarch dust clouds.
在所考察的实验条件下，粉尘浓度对于玉米粉尘火焰传播速度的影响不大。
The reasons are given why weak carbonizing flame of oxyacetylece is used for heating and why brazing seam area can't be polished.
论证了加热时氧——乙炔焰用微碳化焰的原因及焊缝结合区不能采用抛光的道理。
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