PEG could significantly improve the germination energy of alder seed, with its extent relating to the maturity level of seed, no effect of PEG was found on the relative higher maturity seed of alder.是什么意思_PEG could significantly improve the germination energy of alder seed, with its extent relating to the maturity level of seed, no effect of PEG was found on the relative higher maturity seed of alder.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句