process variable的用法和樣例：
例句
- The paper introduces the technological procedure and principle of instant rice production and offers the process parameter.
介紹了方便米飯生產(chǎn)的工藝流程及其原理，同時(shí)給出了各工段的工藝參數。 - The process of desilication is described and the technical parameters are optimized.
對脫硅反應過(guò)程進(jìn)行了研究，并對工藝參數的選擇進(jìn)行了優(yōu)化試驗。
