librations的例句（librations在句子中的用法）

• Compared stress and librations distortion of the first frequency and gained better beam. 通过结构的变形和一阶频率的振型研究比较,初步确定了较为合理的横梁结构.
• Working table with stable in - and - out, non - librations, speed can be adjusted unlimited. 工作台进出平稳 、 无振动, 进出速度无级调节.
• Four - pole with double distance, non - librations, speed can be adjusted unlimited. 四 导柱 双行程升降 、 无振动, 进出速度无级调节.