pho·to·pe·ri·od 
(fō′tō-pîrē-əd)
(fō′tō-pîrē-əd)n.
The daily duration of light and dark to which an organism is exposed, considered especially with regard to its effect on growth and development.
pho′to·pe′ri·odic (-ŏdĭk) adj.
| 单词 | photoperiod |
| 释义 | pho·to·pe·ri·od (fō′tō-pîrē-əd)n. The daily duration of light and dark to which an organism is exposed, considered especially with regard to its effect on growth and development. pho′to·pe′ri·odic (-ŏdĭk) adj. |
| 随便看 |
英语词典包含135693条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。