In order to obtain the expected sandcooling and humidifying effect, requiring sandin the boiling bed to flow in uniform.
为使型砂获得预期的冷却和增湿效果,要求型砂在沸腾床上均匀的流动。
2
The attenuation of temperature wave in humid sand layer on an evaporation cooling roof differs from that in dry sand layer in essence.
有含湿砂层存在的被动蒸发冷却层屋面的温度波衰减,在本质上不同于干燥状态情况。
3
The cast ingots prepared using sand mould and metal mould were analyzed to investigate the effect of cooling rates on morphologies and characters of M2C eutectic carbides in M2 high speed steel.