“预熔”用英语怎么说？

“预熔”的拼音为：yù róng...

联动机预熔胶锅虽然大, 但加胶要要少加,勤加,保持温度稳定.Liandong maintenance pre - oxidation plastic machine though, but with glue to less to keep the temperature constant.研究了药粉预熔对改善药芯焊丝滞熔现象的作用.The effect of profusion on reducing the core melt - ...