| 1. | Low frequency vibration measurement of offshore platforms
1海洋平台振动测试及振源分析 |
| 2. | Study on ultra - low frequency vibration sensor
超低频振动传感器的研究 |
| 3. | Model 991 ultra - low frequency vibration gauge
991型超低频测振仪 |
| 4. | Study on piezoelectric resonant sensor mechanism in ultra - low frequency vibration
压电谐振传感器机理在超低频振动中的研究 |
| 5. | Study on ultra - low frequency vibration sensor by using magnetoelectric speedometer
用磁电式速度计实现超低频振动传感器的研究 |
| 6. | The purpose of this thesis is to study the large range low frequency vibration control of benfield system frame in jianfeng ammonia plant
本文的研究目的是控制建峰化肥厂合成氨装置苯菲尔框架大幅低频振动。 |
| 7. | Using subdivided control method in the system can markedly decrease low frequency vibration of the motor , and can enhance motor ' s accuracy
步进电机细分控制策略能够有效地克服电机低频振动的问题，提高了电机在中、低速运行时的性能。 |
| 8. | It is the first time to use the conventional espi system ( neither phase shifting nor carrier is used ) to continuously analyze the super low frequency vibration with high quantitative in the world
在火箭固体燃料动态力学特性研究中，时间序列法成功的给出了固体燃料的蠕变曲线和蠕变速率曲线，并且给出了其热变形和蠕变不同时刻的全场位移分布。 |
| 9. | Firstly , the low frequency vibration of benfield frame is analyzed and tested . the nature and reason of the vibration of benfield frame are analyzed . a modulation theory is suggested and displayed to explain the low frequency vibration reason of benfield frame
文章首先分析和测试了苯菲尔框架的低频振动，分析了苯菲尔框架大幅低频振动的性质和原因，提出了造成框架振动的低频调制理论。 |
| 10. | The system introduces 991 ultra - low frequency pick up , and takes the vibration signal as the simulation input of practical measurement , which makes the s ystem can measure the ultra - low frequency vibration of long , large , tall and flexible structures and the low frequency vibration of engineering and site
系统引入991型超低频拾振器，将其拾取的振动信号作为本系统实际应用测试中模拟输入，使系统可对长大高柔结构的超低频振动和一般工程及场地的低频振动进行测量。 |
