Bailer: A pipe with a valve at the lower end that is used to remove slurry from the bottom or side of a well as it is being driled, or to collect groundwater samples from wells or open boreholes
👇 ស្វែងរកឯកសាររៀននិងការងារគ្រប់ប្រភេទនៅទីនេះ៖
👇 ស្វែងរកពាក្យផ្សេងទៀតនៅប្រអប់នេះ៖