But for high sulfur treatment (90 kg S hm-2), the Pn and Chl for all leaves were lower than that of the middle sulfur treatment (60 kg S hm-2).是什么意思_But for high sulfur treatment (90 kg S hm-2), the Pn and Chl for all leaves were lower than that of the middle sulfur treatment (60 kg S hm-2).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句