two-hinged arch truss是什么意思

用法例句

Ship lock with double-hinged soleplate, which is developed based on the integral ship lock, is widely applied on silt-sandy foundation and fine-sandy foundation.

双铰底板式闸室结构是在整体式闸室基础上发展起来的一种型式，一般适用于粉砂、细砂地基，应用十分广泛。