shot drill是什么意思

网络释义

1)shot drill,钻粒钻机2)shot core drill,钻粒岩心钻机3)calyxshot drill,岩心管钻粒钻机4)chilled shot dril,冷钢钻粒钻机5)shot drilling,钻粒钻井6)shot drilling,钻粒钻进