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- Based on the modal test of XH7650 machining center with LDS,the nature frequency and vibration style were given. 使用LDS振动分析仪对XH7650立式加工中心进行模态测试,得到其固有频率及振型。
- It is proved that this dither controller can track the drift of dither mechanism's nature frequency, and keep the dither system work safely. 实验表明：该控制器能够跟踪抖动系统的自然频率漂移，保证抖动系统的安全工作。
- Finally, the torsion vibration nature frequency and torque amplitude factor of a rolling mill are calculated by using finite element method. 最后使用有限元法计算了某钢厂冷轧机主传动轴系的扭振固有频率和转矩放大系数。
- The simulation results show that the nature frequency of the structure will stand in 100 -1500Hz through the accession of metal mass and the reasonable choice of dimension. 模拟分析的结果表明:通过制备添加金属质量块及选择合理的尺寸范围,结构固有频率可在100-1500Hz之间;
- Abstract: The nature frequency of dither mechanism will drift when temperature is changing.And this may lead to dither mechanism failure in the extreme. 文摘:在抖动偏频激光陀螺的工作过程中，抖动机构的自然频率会随温度漂移，极端情况下可能导致机构破坏。
- It is the natural frequency of emission of the hydrogen atoms in space . 这是空间氢原子“释放”的自然频率。
- It is the natural frequency of emission of the hydrogen atoms in space. 这是空间氢原子“释放”的自然频率。
- The natural frequency of specimen decreases as the crack length increases. 随着裂纹长度的增加，试样的固有频率逐渐减小。
- The formulas indicate that during a cycle of movement,the dissipated energy includes the viscosity damping and coulomb damping dissipations,which are both proportional to the square of magnitude and the nature frequency. 该式表明,轴向振动单位周期内的能耗包括粘性阻尼和干摩擦阻尼能耗两部分,这两部分能耗都与振动幅值和固有频率的平方成正比。
- It's only human nature to want a comfortable life. 想过舒适的生活不过是普通人的本性。
- Dynamic analysis of stay ring for hydraulic turbine was made with I-DEAS dynamic analysis function. The nature frequency model shapes and model stresses of the whole stay ring were obtained. 介绍了用I-DEAS程序的结构动态分析功能对水轮机座环进行动态分析，得到了座环的整体固有频率、振型及模态应力。
- The results show that this kind of isolator has special stiffness and damping characteristics, and its initial deformation has a great influence on the nature frequency and transmissibility. 7figs. 结果表明，该隔振器具有独特的刚度和阻尼特性，其初始变形对隔振器固有频率和传递率具有较大影响。
- Equation (4-198) yields a first approximation for the change in the natural frequency of vibration. 方程（4－198）给出了一级近似下的固有振动频率的改变量。
- The swing is a pendulum with a single natural frequency depending on its length. 秋千是只有一个固有频率的摆，此频率决定于它的长度。
- A computer software package called I-DEAS is used to simulate the spreader to analyze the stress distributions and nature frequencies of the spreader. 此外，并利用I-DEAS套装软体来建立撒布机之电脑模式，并找出其应力分布与自然频率，此频率均远高于直流马达之最大旋转频率。
- Equation(4-198)yields a first approximation for the change in the natural frequency of vibration. 方程(4-198)给出了一级近似下的固有振动频率的改变量。
- All nature seemed pregnant with life. 整个大自然似乎充满了活力。
- The FEM equation of acoustic wave is used to calculate the air-current natural frequency and pressure pulsation in the pipeline. 利用有限元法求解声学波动方程，建立了管内气流的有限元运动方程，计算出管内气柱的固有频率和气流压力脉动。
- He knows nothing of the nature of my work. 他一点也不了解我的工作性质。
- Keywords: micro-gyroscope, silicon single crystal, three-axis angular-rate sensing, natural frequency and mode shapes. 关键词：微型陀螺仪、矽单晶、三轴角速率感测、振动自然频率与模态。
