retention factor meaning in Chinese

保持系数
持水系数

In the process of calculation , the trade must have a clear idea about the types and contents of ingredients , manufacturing process , retention factors and ensure that the data in these food composition databases is derived from internationally approved testing methods
当使用计算方法时，业界必须清楚了解配料的种类及含量、产品制作过程、保留系数（ retentionfactors )及确保食物营养成份表的资料是经国际认可的测试方法而得出的。