您要查找的是不是:
- 范各庄矿1431上山冲积层泥石流溃泄事故原因分析Analysis on the reasons of 1431 steep drift alluvial horizon mud-rock flow accident in Fan ge-zhuang
- 学校现有27个教学班,1352名学生,81名在职教职工。The school has 27 instructors classes, 1352students, 81 in office teaching and administrative staff.
- 从键型结构来分析,系统中1551、1541和1431键型大量存在,分别约为16.8%、15.8%、21.5%,总和达到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.