Like RDBMS indexes, you can create compound indexes using multiple attributes, and unique indexes, which ensure that duplicate values are not allowed.

与RDBMS索引相似，可以使用多个属性创建复合索引，也可创建唯一索引，确保不存在重复的值。

youdao

But a patent on a molecule-such as a compound that treats a disease in a unique way-creates a period of protection during which no one else can sell the molecule for that particular purpose.

但是一个在分子方面的专利——比如一种能治病的独特的化合物——很长一段时间别人都不可能生产出类似的产品来。

youdao

Scanning for compound documents, incrementing the revision number, and applying unique document Numbers all increase response times and affect scalability.

扫描复合文档、递增修订号和应用惟一的文档号都会增加响应时间和影响可伸缩性。

youdao

So, my final example is from Alan Davidson's lab, and Alan is an inorganic chemist -- he loved those transition metals and they're unique properties, and he designed this compound, it's called Cardiolite, Cardiolite and it's used in heart imaging.

最后一个例子是Alan，Davidson实验室，他是个无机化学家-,他喜欢研究过渡金属,和它们的奇特性质，他设计了这种化合物，叫做。

麻省理工公开课 - 化学原理课程节选

In addition to the compound's unique beauty, it offers exceptional privacy and security, said Barre.

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On a ridge near Sayan stands the unique Bambu Indah, a compound of 100-year-old royal Javanese houses.

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He suggested that, even at relatively low concentrations, the compound might possess a "unique capacity" to induce genes which start the bone-building process.

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