front opening door造句

FOUPs were designed with the constraints of 300mm in mind, with the removable cassette being replaced by fins in the FOUP which hold the wafers in place, and the bottom opening door being replaced by a front opening door to allow robot handling mechanisms to access the wafers directly from the FOUP . The weight of a fully loaded 25 wafer FOUP at around 9 kilograms means that automated material handling systems are essential for all but the smallest of fabrication plants.
It's difficult to find front opening door in a sentence. 用front opening door造句挺难的