Manifolds provide vacuum support for filtration of single, three or six test samples simultaneous. only single vacuum source can help manifolds to finish the whole operation.

多联过滤系统可同时进行多（单、三、六）个样品过滤，只需一个真空气源就可以完成全部操作，节省大量的时间，方便快捷。

youdao

Libya's Muammar Qaddafi might sense a power vacuum and renew his support for rebels in northern Chad, where Libya has territorial claims.

ECONOMIST: Sudan