例句與造句

1. The center spans are twin steel trapezoidal girders which also support a lightweight concrete deck.
2. A further modification produced a guideway that looked like a rightside-up T, although the vertical section was a trapezoidal girder almost as wide as the top of the T . The reaction plate for the LIM was moved to the underside of the horizontal portion of the T on one side, extending vertically down, while the other side contained the electrical conductors that provided power.
3. It's difficult to find trapezoidal girder in a sentence. 用trapezoidal girder造句挺難的