proof rolling造句

例句与造句

1. engineering design department : receive contracts for the design of fire-fighting projects from various customers, receive contracts for the design of automatic fore alarms, automatic fire extinguishing devices, fire-proof rolling doors, 1301 ， 1211 ， co2 ， watersprinkling devices, and applications of fire-proof building materials etc
   工程设计部：承接各种不同对象的消防工程设计，对火灾自动报警、自动灭火装置、防火卷帘门、1301、1211、二氧化碳、水喷淋设备及防火建筑材料应用等设计。
2. It's difficult to find proof rolling in a sentence. 用proof rolling造句挺难的