Results showed that, adding proper recycled aggregates can not only enhance compressive strength of concrete but also advance its viscidity, water-keeping ability and heat preservation ability.

研究表明，适当掺加再生骨料不仅可以提高混凝土的强度，而且还可提高混凝土的粘聚性、保水性及保温性能。

youdao

The Y Combinator-backed company is still keeping the ability to use Posterous as a public blogging platform.

FORBES: Posterous Is Now 'Spaces,' A Photo-Focused App For Private Sharing

By keeping the lower ability group much smaller, the teachers are able to give closer attention to under-achieving boys.

BBC: London teachers' Jamaican lessons

"By lodging papers with the High Court the bidders are keeping open their ability to pursue the Department for Transport for the costs they wasted on bidding for the cancelled Greater Western franchise procurement, " he said.

BBC: Great Western franchise: Rail firms start legal action