To make their design rational, a knowledge based shaft drilling and blasting design expert system (SDBES) was developed using OEC, a tool for expert system.
为使其设计合理，利用专家系统工具o EC开发了立井钻眼爆破设计专家系统(S DBES)。
2
Remove rust, mill-scale and other loose material by abrasive blasting or power tool cleaning.
用喷砂或其他电动工具除去铁锈、氧化皮等。
3
The notch blasting mechanism is expounded by the fracture mechanics principle, the cutting tool parameters for notch presplitting blasting is put forward.