old ballast造句

例句与造句

1. Those old ballast materials will be screened and cleaned to be reused.
2. In more recent years it has seen Freightliner-hauled Network Rail trains discharge old ballast at Norton Fitzwarren for recycling.
3. The new high-frequency ballast draws only 2 W, rather than the 6-10 W of the old ballast, increasing the efficiency of the system.
4. The site was formed by the removal of an old ballast hill during the construction of an embankment over the Dene Burn; the line continued north and then west to the bank of the Tyne at Archer's Quay.
5. It's difficult to find old ballast in a sentence. 用old ballast造句挺难的