周期性

• It could be argued that localities subject to periodic abnormally dry early summer conditions should be favoured for seed orchard sites .
  可以证明有周期性反常干旱早夏的地方作种子园园址应是有利的。
• In some cell lines there is a similar periodicity in changes of cell surface antigenicity or response to wheat germ agglutinin .
  在某些细胞系中，细胞表面抗原性或对表胚凝集素的反应方面有相近似的周期性变化。
• Quantities and units . periodic and related phenomena
  量和单位.周期性和有关现象
• Algorithm analysis of periodicity of relational matrix
  关系矩阵的周期性算法分析
• Dynamic ram ' s need to be refreshed periodically
  动态ram则需要周期性地刷新数据。
• ( 4 ) observing the galactic plane periodically
  （ 4 ）对银道面作周期性扫描观测。
• The electron state in the periodic electromagnetic field
  周期性电磁场中的电子状态
• Life - cycle performance of new york city bridges
  纽约市桥梁生命周期性能的评估
• Dead mappings could be eliminated by periodically scanning the
  可以通过周期性地扫描
• Research into the theory of cyclical economic crisis
  周期性经济危机理论新探