The third, the Real-Time Memory Database based on the red-black tree and the querying optimization program are mainly researched.

第三，着重研究了基于红黑树的实时内存数据库数据组织结构及其查询优化方案。

youdao

My company under the Ministry of Foreign metal processing business undertake Metal electrophoresis, mainly black-based, electrophoresis and so on all kinds of metal parts.

我公司属下五金部对外承接金属电泳加工业务，主要以黑色为主，电泳各种金属件等…

youdao

Obviously, there's the Congressional Black Caucus, it's mainly based in the House.

NPR: Reid Prepares for Role as Majority Leader