短语
扩帮巷道宽度
enlarged entry width
扩帮开采
Expansion-wall mining
扩帮过渡
expanding slope transition
分期扩帮过渡
staged wall slashing transition
露天采场扩帮
open pit slope enlarging
扩展的帮助系统
Help system extensibility
应用扩展帮助
Use Extension Help
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