名词化（nominalization ）名词化主要指表示动作或状态的抽象名词，或起名词作用的非谓语动词一般由动词派生，也包括由形容词加后缀-ability, -ity, -ness 等构成的名词可分为四大类：动作名词、名词性动名词、动名词和不定式动作名词（action noun ）an examination of the object with an ordinary microscopethe combination of hydrogen ions with chloride ions in the solutionRecovery of distillates is also performed in the vacuum unit.动词性名词（verbal noun ）the examining of the object with an ordinary microscopethe combining of hydrogen ions with chloride ions in the solutionThe recovering of distillates is als
