polyurethane rigid foam的用法和樣例：
例句
- This paper deals with the production and properties of iso-pentane blown PU rigid foams,and safety control.
本文將詳細討論異戊烷發(fā)泡聚氨酯硬泡的生產(chǎn)和泡沫性能及安全控制。 - The relevant safety technique and the safety operaional procedures in cyclopentane blowing process of rigid polyurethane foam are introduced.
介紹了聚氨酯硬泡環(huán)戊烷發(fā)泡工藝中相關(guān)的安全技術(shù)和安全操作規程。
