对向方向角法
method by reciprocal bearings
NW及NWW向断裂
NW and NWW-trending rupture
北西向断裂
north-west faults
NW faults
NW-SE-trending fracture
NW fault
northwestern run fracture
定向断裂爆破
orientation fracture blasting
breaking rock mechanism
directional fracture blasting
directional fracture controlled blasting
定向断裂控制爆破
directional repture controlled blasting
directional fracture controlled blasting
directional breaking controlled blasting