发泡 fāpào foaming Origin Definitions Defs Strokes Stroke Words Sentences Sents 发泡剂 fāpàojì foaming agent a chemical substance used to produce foam or gas bubbles in liquids or materials such as plastics and rubber发泡胶 fāpàojiāo expanding foam a sprayable polyurethane foam sealant that expands and hardens to fill gaps and cracks in construction and DIY projects