英语词源
- backfill (n.)
- 1901 (as backfilling), from back (adj.) + fill (n.). The verb was in use by 1930.
权威例句
- 1. At last, some suggestions were raised for the concrete backfill mining.
- 最后对具体的充填开采方法提出了建议.
- 2. A systematical study is made of the stability of backfill in blasting.
- 对爆破动载下充填体稳定性进行了系统研究.
- 3. This article is good for promotion of backfill.
- 本文对充填技术的推广,具有一定的参考价值.
- 4. The upward drift stoping with backfill is a mining method with a widespread use future.
- 上向进路充填采矿法是一种具有广阔应用前景的采矿方法.
- 5. Earth excavation and backfill is to have the appropriate security measures to strictly regulate the construction.
- 土方开挖与回填是要有相应的安全措施,要严格按规范施工.