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- sound natural frequency of tube 管道声学固有频率
- natural frequency of tube 管子固有频率
- 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。
- 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。
- 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。
- 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 natural frequency of horizontal drift of moored systems is far lower than that of the first order motion. 系泊船舶的水平慢漂运动的自然频率远低于一阶运动的自然频率。
- The lower the natural frequency of the FST is, the better the performance of vibration isolation is. 浮置板系统的固有频率越低，隔振性能越好。
- The natural frequency of a RCB is an important indicator to discriminate a RCB is damaged or not. 曲率模态振型和应变模态振型对于钢筋混凝土梁的局部损伤较位移模态振型敏惑。
- Objective:To investigate influences of bicortical anchora ge on the values of natural frequency of dental implants. 目的:用有限元方法研究双皮层骨种植对牙种植体初期稳定性的影响。
- The natural frequency of the gyro should be about 2 kHz,and the natural frequency of senseaxis should be one bandwidth higher than that of driveaxis. 陀螺振动频率应设计在 2 k Hz左右 ,检测轴自然频率比驱动轴高一个陀螺频带宽度。
- The results indicate that the natural frequency of vibration of multispan stone arch bridge is closely packed and it has adequate safety allowance. 研究结果表明，多跨度石拱桥作为一个整体，其自振频率较为密集，桥梁具有足够的安全裕量。
- This paper presents a method used for calculating the natural frequency of gases subjected by small pressure pulsations in pipe systems. 本文介绍一种用以计算微压扰动下管道中气柱自振频率的方法。
- Through analyzing the connatural characteristic of antenna, the factors are found that affect the natural frequency of antenna. 通过对天线固有特性分析，找到了影响天线频率的因素，为天线结构设计提供了依据；
- Thoroughly clean surface of tube around puncture. 彻底清洁内胎穿孔周围的表面。
- Improper fit of tube on spindle. 纱管与锭子之间的吻合不合适。
- The result shows that when the engine is in idling,its vibrating frequency is close to the natural frequency of the body frame. 结果显示,当发动机在怠速工况时,它的振动频率接近于客车车身骨架的固有频率,易发生共振,应尽量避免。
- It is the natural frequency of emission of the hydrogen atoms in space and was discovered by us in 1951; it must be known to any kind of radio astronomer in the universe. "它是人们于1951年发现的太空氢原子的天然发射频率,宇宙间任何一种射电天文学家都必定知道它。"
- Both increasing the mass and reducing the support stiffness of the slab can reduce the natural frequency of the FST system to achieve better performance of vibration isolation. 可以通过增加浮置板质量和降低浮置板支承刚度的方法降低浮置板轨道系统的固有频率，以达到较好的隔振性能。
