it is pointed out that an internal cantilever beam has dynamic softening phenomena during rotation with even speed and the dynamic softening phenomenon is ascribed to the large range movement of the beam
指出内悬臂梁在匀速旋转过程中存在动态软化现象，这种动态软化现象是由于梁的大范围运动造成的
以上为机器翻译结果，长、整句建议使用 人工翻译 。