苏联科学家 C·皮昂特科夫斯基发明了一种奇妙的岩石鉴定器。新的矿产地是不容易发现的,通常要用复杂的方法来测定该地区矿物是否丰富?地质学家们首先要获得矿石的试样,再送到实验室进行化验后才可以决定。这种奇妙的仪器在几分钟之内就能完成岩石试样的鉴定工作。 Soviet scientist C. Piantukovsky invented a wonderful rock appraiser. New mineral areas are not easily identified. Complex methods are often used to determine the abundance of minerals in the area. Geologists first obtain ore samples and send them to laboratories for testing before deciding. This fantastic instrument completes the identification of rock samples in minutes.