tandem engines meaning in Chinese

串联式发动机
串列发动机

Combining fuji xerox unique energy - saving quick fuser " free belt nip fuser " and a newly developed " 4 - 2 - 1 tandem engine " allows image quality adjustment and fuser preheating to take place concurrently at startup
将富士施乐独特的节能快速定影器“ free belt nip定影器”和新开发的“ 4 - 2 - 1串联引擎”配合使用后，即可使图像质量调整和定影器预热在启动时并行进行。