这种机器有两种可调的速度: 快速和慢速.This machine has two settings: fast and slow.支承中心应做成可调的.The center of support should be made adjustable.该行程可借助可调的止动螺钉加以限位.The stroke may be limited by adjustable stops....

“可调的”的英语可以翻译为：tunable ...