heating up time constant 升热时间常数
Heating up time 升温时间
no-load heating up time 空炉升温时间
heating-up time at empty 空炉升温时间
Time of heating up 升温时间
The utility model has the characteristic of uniform steaming time, saves heating-up time and has remarkable energy saving effect.
具有统一煮熟的特点，节约加热时间， 节能效果明显。
Because the liquid nitriding the liquid and the work piece direct conduction heating, reduced the work piece heating-up time, raised the azotize speed.
液体氮化由于液体与工件直接传导加热，缩短了工件加热时间，提高了渗氮速度。
If the refractory wall is covered with high reflectivity coating, the heating-up time with workpieces is reduced obviously, whereas the heating-up time at empty cannot be reduced;
炉壁内表涂以高反射率涂料后，可明显缩短工件随炉升温时间，但不能减少空炉升温时间；
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