长周期

• A polarization insensitive lpfg operating at a specific wavelength is achieved by writing the lpfg in a birefringence fiber , for the first time
  首次发现了在双折射光纤中写入的长周期光纤光栅存在对偏振不敏感的谐振峰。
• The study is carried out both in database and methodology aspects . in the database aspect , the digital broad - band records originally used by seismological studies are used
  根据长周期地震动研究的特点，本文从数据与方法两方面进行了以下工作。
• By the use of the combination of suction labyrinth seal and inflator labyrinth seal and advanced materials , the machine gains long term operation
  把原来简单的充气式迷宫密封改为抽?充气组合式迷宫密封，同时气封采用更为高级的材质，实现了机组长周期运转。
• The comparison of fabrication methods of lpfgs reported in the resent years and the forming mechanism of the novel lpfg are discussed in this paper
  本文首先比较了现在各种长周期光纤光栅写入方法的优缺点，并在长周期光纤光栅的形成机制上作了一定程度的探讨。
• By using this technique , the baseline of transmitting acceleration data in real time is adjusted , and the velocity and the displacement are integrated synchronistically
  利用此套技术可对实时传输的加速度记录同步进行长周期基线校正、积分求速度及积分求位移。
• According to company procedure , managing long term po , training and monitor material planner for material pulling , controlling raw material inventory
  为确保生产过程正常运行，根据公司文件，管理公司长周期订单，培训和监控物料计划员实施物料拉动，控制原材料库存。
• We have got the following knowledge and conclusions : ( 1 ) the records of low - gain analog displacement - type seismograph can be used to study long period ground motion
  在本文工作中，得到了如下主要成果与认识： ( 1 )过去使用的低放大倍数位移式地震仪记录可用于长周期地震动研究。
• In comparison with other schemes , advantages of the lpfg based devices and an important role of the lpfg in communication and sensing technology are demonstrated in detail
  并通过与其他方案对比，说明了基于长周期光纤光栅器件的优点，肯定了长周期光纤光栅在通信传感领域的价值。