Results show that reducing the apparatus size and increasing the hot air flux can effectively increase immersed nozzle's preheating temperature and improve the thermal gradient on the nozzle neck.
结果表明，缩小烘烤箱的尺寸，加大热空气的流量，可以有效地提高水口的预热温度，改善水口颈部的温度梯度。
The simulation results show that when preheated air temperature increases the maximum temperature gets larger, the temperature gradient becomes lower and the flame length longer.
模拟计算结果表明，提高空气预热温度，炉内温度的峰值相应增大，温度梯度降低，温度分布更均匀，火焰更长。
It was concluded that change of air supplying temperature has a little influence on the gradient of the velocity and temperature.
通过分析认为，送风温度的变化对于整个试验区域速度场和温度场的梯度变化影响较小，而送风速度的变化则影响较大。
Hot air circle device can evenly send hot air to everywhere of sealed space by inside passage, to control the internal temperature and gradient in sealed space.
热空气循环系统将热空气通过内部风道均匀送到封闭空间的每个地方，严格控制封闭空间内的温度及温度梯度。
The results show that the precipitation and air temperature in the low and high mountainous areas are well related to elevation in summer, and their gradient values are high.
结果表明，夏季中低山带的降水和气温与其对应高度的关系较好，且梯度值较大；
The results show that the precipitation and air temperature in the low and high mountainous areas are well related to elevation in summer, and their gradient values are high.
结果表明，夏季中低山带的降水和气温与其对应高度的关系较好，且梯度值较大；
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