The use of a prescribed form leads to a greater certainty. 使用規定的合同形式會產生更大的確定性。
Then a Grey Non-intrinsic model for indoor air quality is proposed by combining Grey System Theory with the definitive physical model. 利用原有的確定性物理模擬與灰色系統理論相結合,提出了室內空氣品質灰色非本徵模型。