回热加热器是火电机组重要的辅助设备.Regenerative feedwater heaters are important auxiliary facilities of power plant.进而利用热力学循环具有理想回热条件的普遍判据,分析了铁电斯特林制冷循环和埃里克森制冷循环的回热特征.The Ericsson and Stirling cycles are two of the important regenerative ...
The soldiers longed for their own hearths.战士想家.In the hearths the fires down and the meat stopped cooking.在壁炉的火平息和肉停止做饭.In the hearths the fires died down and the meat stopped cooking.在炉床中的火灾死下,而且肉停止煮....
Brush your teeth after each meal and floss daily.餐后要刷牙，而且每天要使用牙线清洁牙缝。Draw the floss backwards and forwards between the teeth.将牙线在齿间来回拉动。Craft Resources also sells yarn and embroidery floss.工艺人员服务公司也售卖纱线和绣花丝线。...