heat lag热滞后,换热时相差heatn.热度；热；热烈；激烈；发烧v.(使)变热；(使)激动heating arrangement供热装置heat insulation bar隔热条heat shrinkage bush热缩套管heat exchanger core换热器芯子heat-capacity lag热容量滞后heat radiation flux热辐射通量heat-filter glass滤热玻璃heat reflow coating热熔再流平涂料heat of sublimation升华热heating surface area受热面积