双面加热 meaning in Chinese

sandwich heating

The smaller interval is the larger power output is . so in order to be the largest power output , the structure should be as small as possible . as far as the instantaneous heating electromagnetism vortex water heater is concerned , the power which the excitation device outputs is too small , so we adopt two e
又由于对于即热型电磁涡流热器来说，单个励磁装置输出的功率过小，达不到加热的目的，因而木电磁涡流热水器采用两套励磁装置，进行双面加热，每块涡流加热扳的两表面均有水流过，即整体上采用双面加热，四面过流的结构方式。