Ball screws for ram adjustment and crossrail adjustment.

滑枕和横梁为滚珠丝杠。

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Meanwhile Crossrail is essential in order to cope with London's growing population.

同时，横木对应付伦敦不断增长的人口起着重要作用。

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After decades of wrangling, there is agreement at last on a fast underground Crossrail linking suburbs west and east, but this will not be open until 2017 at the earliest and the cost has spiralled.

经过数十年的争论，终于达成协议，建设一条连接东西郊的快速地铁（伦敦横贯铁路，Crossrail），但是项目动工时间不会早于2017年，而且工程成本也在不断增加。

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Will we get "Crossrail 2" from the north to the south of the capital ?

BBC: Crossrail recycling lost heritage under London

Eventually, the shaft will be sunk 20 meters deep to support the Crossrail tunneling works.

CNN: London rail excavation unearths suspected 'plague pit'

The mining engineers on the multi-billion pound Crossrail project are certainly a passionate lot.

BBC: Crossrail: Passion deep below west London