reballasting

名词 n. 动词 v.

英文释义

名词 n.
  1. The process of renewing the ballast under railway track. uncountable
    — Repair of the many tunnels and high masonry viaducts on the eastern side of Semmering, appears to have necessitated this single-line working, although complete rerailing with long welded rails and resleepering and reballasting are being undertaken.
动词 v.
  1. present participle and gerund of reballast form-of,gerund,participle,present
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