Riffle division method: a riffle is a kind of non-mechanical sample divider, which is usually fed manually.The sample is divided into 2 equal parts by riffle, with one retained and one rejected.是什么意思_Riffle division method: a riffle is a kind of non-mechanical sample divider, which is usually fed manually.The sample is divided into 2 equal parts by riffle, with one retained and one rejected.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句