予热 meaning in English
warning up
Examples
- Making use of oxyen - acetlene mixed burn the torch produces high heat . after twice - through opertion spray - werkpiece . we first coat . then remelt in order to combine powder metalluegically . we may also heat large area workpiece before spraying prehwat . it guaring technology
100产品利用氧-乙炔混合燃烧产生的高热，对二步法喷焊工件进行喷粉后重熔，并可以对大面积喷涂工件进行喷前予热，保证喷涂喷焊工艺的进行。