Place the glass bowl, covered, on a pan of boiling water to make a double boiler.
水开以后，将玻璃碗放入不锈钢锅内蒸一小时。
2
The invention relates to a molding sand cooling and dedusting device for foundry, in particular to a double-plastid vibration molding sand boiling and cooling bed.
本发明涉及铸造用的型砂冷却除尘装置，特别是双质体振动型砂沸腾冷却床。
3
This process line uses double-screw extruding technique to replace the traditional steam boiling process.