tropic zone

基本解释

This indicates that these climatic events exerted influence on sea area around tropic zone .
这表明快速的气候变化事件也会影响到热带海区。
Hainan Thamin deer is a precious species of deer in the tropic zone, it is regarded as the first-class animal under protection in China.
海南坡鹿是珍贵的热带鹿种，属国家一级保护动物。我们于1985—1988年间在海南省大田自然保护区对其食性进行了常年性的野外观察研究。
Yuetian sweet corn is a series of hybrids with their parents coming from temperature zone and tropic zone respectively. The heterosis of the Yuetian sweet corn is prominent.
本系列品种为利用国外的温带资源和国内的热带和亚热带血缘分别培育自交系，利用常规杂交方法与现代生物技术结合培育的子一代杂交种，杂种优势突出。