多年来,用的较多的固定剂是动物制品龙涎香 、 香猫香 、 麝香、以及河狸香.For many years the leading fixatives were the animal products ambergris, civet, musk and castoreum.河狸寻找造窝的场所时是很挑剔的.A beaver looking for a building site is very choosy.其他一些因素也有助于河狸的活跃...
It was a large diamond, but it had a flaw.这是颗大钻石, 但它有一点瑕疵.Application: Be fit for fluorescent flaw detection and fluorescence analysis.用途: 适用于荧光探伤和荧光分析.The only flaw in his character seems to be a short temper.他性格中的唯一缺点好...