After introduction of the heavy metals into the paddy soil, the downwards migration was 45 cm and 30 cm depth for Cd and Cu respectively regardless of the doses.是什么意思_After introduction of the heavy metals into the paddy soil, the downwards migration was 45 cm and 30 cm depth for Cd and Cu respectively regardless of the doses.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句