prescaler是什么意思

用法例句

Feature and application of preheating equipment of conversion section in No. 4 sulphuric acid system;

硫酸四系列转化系统预热装置的特点与应用

All big blast furnaces in Angang adopt a double precheating equipment,including an oneself preheating equipment,additional combustion system,smoke waste heat recovery and crest type preheating stove craft etc.

鞍钢所有大高炉都采用了双预热装置,包括自身预热工艺、附加燃烧系统、烟气余热回收和顶燃式预热炉工艺等装置。