assistant reagent的用法和樣例：
例句
- This type of dyeing assistant can improve the color quality of the fabric.
這種染料助劑可以改善布料的顏色質(zhì)量。 - The sulfur removal rate of the assistant catalysts applied in domestic FCC units and their impact on product slates are highlighted.
重點(diǎn)介紹了目前催化裂化過(guò)程中使用的降硫助劑的脫硫率及其對催化裂化產(chǎn)品分布的影響等。
