1.85火龙打金服网站_菠萝菠萝蜜免费视频高清观看1_好吊妞这里有精品视频_91精品国自产拍一区二区_日韩人妻无码中文字幕第一页_超碰福利成人_在线观看哔哩哔哩_亚洲色噜噜噜狠狠站欲八人妖_黄色网站亚洲欧美_午夜国产小视频在线观看黄

The main purpose

Radiological testing of environment, building materials and home decoration materials;

Seek approval of groundwater and determine the density of solid materials;

Semi-quantitative analysis of on-site uranium samples;

Large-area gamma anomaly general survey and cataloging of tunnels and exploration grooves;

Small size, high sensitivity, and good repeatability.