长周期

• Theoretical and experimental study on properties of long period fiber gratings
  热光系数与长周期光纤光栅的温度灵敏度研究
• Long period seismograph
  长周期地震仪
• Comparison of observed and predicted long - period changes in the earth ' s gravity field
  重力场长周期变化的观测与理论结果比较
• Long periodic oscillation
  长周期振荡
• Thermo - optic coefficient and temperature sensitivity of long - period fiber gratings
  长周期光纤光栅光谱响应与结构参数关系的研究
• Long - period variable
  长周期变星
• Numerical calculation for the transmission spectrum of a novel long period fiber grating
  一种新型长周期光纤光栅透射谱的数值计算
• By technical renovation the pump is able to run smoothly for a long period of time
  通过技术改造，使液氨输送泵能够长周期平稳运行。
• Detection of long - period core modes by using the data from global superconducting gravimeters
  利用全球超导重力仪数据检测长周期核模
• Study on refractive index and concentration sensor based on long - period fiber grating
  基于长周期光纤光栅的折射率与浓度传感方案的研究