毫秒微差延时爆破
millisecond elementary difference delay explosion
毫秒延时爆破
millisecond delay blasting
milli-second delay blasting detonating
爆破松动岩体
explosion loosening the rock mass
浅孔松动爆破
shallow hole loose explosion
松动爆破
loosen blasting
standing shot
blasting for loosing rock
loosening blasting
loose blasting
blasting parameter
standing blasting
blasting for loosening rock
light blasting
flexible dynamite
微差松动爆破
Millisecond loose blasting
预裂松动爆破
pre-splitting and loose bursting
发动机起动延时继电器
time delay engine start relay
光纤实时延时线
optical true time delay line