catalyst case的用法和樣例：
例句
- Catalyst returning to the reactor may not be completely regenerated because of insufficient time in the regenerator.
因為催化劑在再生器中停留時(shí)間不足，故返回反應器的催化劑可能未被完全再生。 - The physical resistance of catalysts plays a major role in catalyst selection and reactor design parameters.
催化劑的物理強度在催化劑選擇和反應器設計參數方面起著(zhù)重要的作用。
