3325英语网 单词
photoperiodism的意思
photoperiodism
英 [fəʊtəʊ'pɪərɪədɪz(ə)m]
美 [,foto'pɪriə,dɪzəm]
- n. [农学] 光周期现象（=photoperiodicity）；[生物] 光周期性（=photoperiodicity）
英文词源
- photoperiodism (n.)
- 1920, from photoperiod (1920, from photo- + period) + -ism.
双语例句
- 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.
来自辞典例句
- 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?
来自互联网
- 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.
来自互联网