Treatment duration的用法和樣例：
例句
- Cell viability decreased with raised concentrations and prolonged treatment of BOD.
隨著藥物濃度的增加和處理時間的延長，細胞存活率明顯下降。 - It can form a layer of even crystal nucleus on the surface of metal.So can form membrane phosphide fast, and reduce treatment time.
可在金屬表面形成結晶均勻的晶核，使金屬表面活性均一化，加快磷化膜的形成速度，縮短處理時間。
