英语语法分析

NEWS: last year and a half R & D, the latest PU foam machine cyclopentane upcoming, welcome to inquire!

最新消息：历时一年半研发，最新型PU（聚氨酯）环戊烷发泡机即将推出，欢迎您来电咨询，详情面议！

Sterol is a kind of substance of full cyclopentane hydrogen skeleton, and exists in the nature in free form and binding form.

甾醇是环戊烷全氢匪为骨架的一种物质，在自然界中以游离态和结合形式存在。

Because cyclopentane is a flammable and explosive substance, the station with large quantity of it belongs to major hazard installation.

广东科龙集团无氟生产线中的预混站是使用环戊烷危险物品配制发泡剂的重大危险源，燃烧爆炸事故风险较大。