London may be famous for its red double-decker buses, but it is the underground system, parts of it more than a hundred years old, that is especially vulnerable.

VOA: standard.2010.04.01

Parts of the system are going to be at five bar.

系统的某些部分的压强会是5巴。

麻省理工公开课 - 热力学与动力学课程节选

Parts of the system are going to be at five bar.

系统的某些部分的压强会是5巴。

麻省理工公开课 - 热力学与动力学课程节选