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- 范各莊礦1431上山?jīng)_積層泥石流潰泄事故原因分析Analysis on the reasons of 1431 steep drift alluvial horizon mud-rock flow accident in Fan ge-zhuang
- 學(xué)?，F有27個(gè)教學(xué)班,1352名學(xué)生,81名在職教職工。The school has 27 instructors classes, 1352students, 81 in office teaching and administrative staff.
- 從鍵型結構來(lái)分析，系統中1551、1541和1431鍵型大量存在，分別約為16.8%、15.8%、21.5%，總和達到54%；The system of liquid state (943) Alabounds in the following bond types: 1551,1541 and 1431. The percentages ofthem are 16.8%25, 15.2%25 and 21.5%25 respectively. The sum of them reaches 54%25.
