We do test which involves using hydraulic cylinders to apply loading to it.
我们做的测试包括使用液压缸对其施加载荷。
英语百科
Hydraulic cylinder
A hydraulic cylinder (also called a linear hydraulic motor) is a mechanical actuator that is used to give a unidirectional force through a unidirectional stroke. It has many applications, notably in construction equipment (engineering vehicles), manufacturing machinery, and civil engineering.