被动磁力轴承造价低廉，但是不可控。

Passive magnetic bearings are cheap but not controllable.

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承造学校新建筑的人又将工程转包给铅管工人，汽管装配工人等等。

The contractor for the new school building gave out subcontracts to a plumber a steam fitter etc.

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大连造船厂承造的某型船舶由于其动力系统结构复杂，设备及管路舾装周期很长。

A certain type of ship built by Dalian Shipyard due to its complicated structure of propulsion system the fitting-out cycle of the equipment and piping is very long.

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