封闭旋进取泥器
mud catcher with seal and function of drill
泥沙样钙化
sand-like microcalcification
史密斯—麦金太尔取泥器
Smith-McIntyre mud sampler
水泥取样方法
Sampling method of cement
比例取样器
proportional sampler
proportional sampling device
sampler
Proportional
比例液体取样器
proportional liquid sampler