早期的地质勘查人员主要是靠罗盘、锤子、放大镜来找矿,只是后来才逐渐配备各种物理的和化学的分析仪器。但地质人员并不以此为满足,他们不断地在打新的主意。过去既然有过门犬、猎犬、牧羊犬、军犬、警 Early geological prospectors mainly rely on compasses, hammers, and magnifying glasses for prospecting, but later they were gradually equipped with various physical and chemical analytical instruments. But geologists are not satisfied with it, they are constantly trying to make new ideas. In the past, there are crossing dogs, hounds, shepherds, dogs, police