“Big Aperture”寫句子，用Big Aperture造句

1、Linkage Backboard-Open-and-Closed Mechanism of Big Aperture in Dump Truck

3、Studies on Shutoff Agent Applied to Loose Gritstone Reservoir with Big Aperture of High Temperature and High Salt;

2、Design and Construction on the Railway Aerial Plan of Jacking the Big Aperture Framed Bridge