石蕊: 从几种地衣类植物中获取的带色有机化合物的混合物.Litmus: Mixture of coloured organic compounds obtained from several species of lichens.例如石蕊和酚酞.Examples are litmus and phenolphthalein.它能改变指示剂的颜色,使石蕊和通用指示剂变蓝.It can change the color of the ind...
He was paid an undisclosed sum.他得到了一笔数目不详的钱。Lurgiuses have used undisclosed promoter and corrosion inhibitor.鲁奈公司采用了未公开的活性剂和防蚀剂.The third person does not become liable to an undisclosed principal.第三人可不向隐名本人承担责任....