这两种机械的结构会有所不同，相对来讲，静态的会比较简单，一般使用丝杆控制横梁的位置，如果是大载荷的就会使用液压的。而动态的没有太多使用电子控制的，主要都是使用比较小的载荷，因此稍微大一些的就需要使用液压来对试验的频率进行驱动。

The structure of the two machines will be different, relatively speaking, the static will be relatively simple, the general use of the screw to control the position of the beam, if it is a large load, will use hydraulic. And the dynamic is not too much use of electronic control, mainly the use of relatively small load, so a little larger, you need to use hydraulic pressure to drive the frequency of the test.

一般来说静态的不能使用比较高的频率来进行运转，因为在较高频率下，很难对机架进行控制，而动态的则可以使用比较高的频率来进行试验采样。动态的试验在用应力之类的进行控制时，需要通过传感器进行比较及时与准确的对数据进行反馈，而静态机则没有办法达到类似于动态的精准控制。

In general, static frequencies cannot be used at higher frequencies, because it is difficult to control the rack at higher frequencies, while dynamic ones can be used to test sampling at relatively high frequencies. Dynamic test in the use of stress and other control, need to be compared by sensors, timely and accurate feedback to the data, while the static machine can not achieve similar to dynamic precision control.