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煤矿地质
 煤矿地质
tech. coal mine geology
| 工作
 工作
gen. function; occupation
comp., MS job
hydroel.st. task
manag. job
met. darg; effort
tech. work
wind. running

to phrases
煤矿地质
tech. coal mine geology (学)
煤矿地质
: 1 phrase in 1 subject
Explosives and Explosive Ordnance Disposal1