the assimilation of CO2 in the fourth leaf from the top 1.45 times that of the latter at the early flowering stage,and 1.31 times at the ending flowering stage;是什么意思_the assimilation of CO2 in the fourth leaf from the top 1.45 times that of the latter at the early flowering stage,and 1.31 times at the ending flowering stage;在线翻译_英语_读音_用法_例句