因此，当成品的颗粒大小分布、留水分含量、积密度和颗粒形状必须符合精确的标准时，喷雾干燥是一道十分理想的工艺。

• Therefore when the distribution of granule size, final moisture, bulk density, granule shape of finished product must be conformed to accuracy standard, the spray drying is an ideal process.