Under the action of a same heat source, when the direction of grain is perpendicular to the direction of the action, the ignition delay time is the longest.
同样外部热源作用下，木材内部木纹方向垂直于作用方向时，着火延迟时间最长；
The ignition delay time was studied on the hot position bench that could stimulate combustion process of traveling grate furnace.
在可模拟链条炉中燃烧过程的热态实验台上，研究了块粒型煤的着火时间。
The ignition delay time was studied on the hot position bench that could stimulate combustion process of traveling grate furnace.
在可模拟链条炉中燃烧过程的热态实验台上，研究了块粒型煤的着火时间。
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