Depending upon the requirements of coldendtemperature of tube wall of air preheaters, the method of cold air preheating and the criterion of selection for air heater are put forward.
根据空气预热器冷端壁温的要求，提出了冷风预热的方法以及暖风器选择的原则。
2
He expects the cold front to end on March 16 nationwide and then the temperature will start to rise.
他同时预测，全国范围内，此次较强的冷空气将在16号以后基本结束，气温随后将稳步回升。
3
The Grain rain signals the end of cold weather and a rapid rise in temperature.