英语词源
- photoperiodism (n.)
- 1920, from photoperiod (1920, from photo- + period) + -ism.
权威例句
- 1. For experimental purposes , scientists originally assumed that photoperiodism worked through photosynthesis.
- 为了进行实验, 科学家们最初曾经设想,光周期现象可能是通过光合作用实现的.
- 2. What is the adaptive significance of photoperiodism during evolution?
- 在演化过程中生物或植物以光周期适应(环境)之意义为何?
- 3. But there were obvious spring and strong photoperiodism spike cultivars . These need to improvement.
- 近期育成的大穗品种多有明显的春性化、强感光性, 需要加以改进.