常見例句It was a boring lecture. It was all stuffI'd heard before. 講座很無(wú)聊,都是些我聽過的內(nèi)容。In order to provide the reference for stuffies of external nucleic acids, we have determinated the DNA quantities in some cereal, fish meat and shellfish meat by means of ultraspectrodensitonietry. 本文採(cǎi)用經(jīng)典的紫外分光光度法對(duì)幾種穀物和幾種魚肉及貝肉中的DNA含量進(jìn)行了測(cè)定，爲(wèi)外源核酸的材料選擇提供蓡考。 返回 stuffies