purification efficiency的用法和樣例：
例句
- The keys to affect the efficiency of smoke purifying in aluminium electrolysis are discussed.
論述了鋁電解煙氣凈化工藝及影響凈化效率的幾個關鍵因素。 - It is studied on the biological characteristics of Ipomoea Aquatica,its rela-tionship of growth with the environmental factors and its effect in sewagewater purification.
本文研究了水蕹菜的生物學特徵，生長與環境因子的關係，以及對污水的凈化效率。
