Elastomeric seat materials are not suitable for steam service.

弹性阀座材料不适合于蒸气管道中。

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Series a includes steam service for warming up before the main line is opened, and for balancing pressure where the lines are of limited volume.

系列a包括用于在主管道开启前进行加温的蒸汽应用场合，或在流量有限的管道上平衡压力。

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While FriendFeed may be a duplicator in some ways of other services before its inception, there's no denying that it's now the top social aggregator and a service that's gaining a lot of steam.

起初，FriendFeed 也许是复制模仿某些服务，但不可否认，如今它是最顶级的社会化聚合网站，并且其服务聚合了大量的内容。

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Valve runs the online Steam gaming service through which many players buy and manage their games.

BBC: Valve boss Gabe Newell awarded Bafta fellowship

The roundhouses, used to service steam engines, are thought to date from 1864 and were abandoned in the 1960s.

BBC: Railway roundhouses foundations unearthed in York

In the past it has dismissed claims that it is working on a console-like device that would put its Steam online gaming service into a stand-alone box.

BBC: Game maker Valve Software recruits hardware experts