old ballast造句
例句與造句
- Those old ballast materials will be screened and cleaned to be reused.
- In more recent years it has seen Freightliner-hauled Network Rail trains discharge old ballast at Norton Fitzwarren for recycling.
- 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.
- 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.
- It's difficult to find old ballast in a sentence. 用old ballast造句挺難的