ឥណទានរូបភាព៖
ឈ្មោះអ្នកបោះពុម្ពផ្សាយ
ខ្សែ
បច្ចេកវិជ្ជាថ្មីនេះ កាត់ថ្មដោយមិនកិន
ការពិពណ៌នាតំណ
Petra, a three-year-old startup inspired by that vision, says it’s developing tech to cut through rock without grinding into it. The company first tested cutting through rock with a plasma torch in an industrial park in Oakland, California in 2018. A larger plasma torch later cut through slabs of stone at temperatures above 10,000 degrees Fahrenheit.
- បោះពុម្ភ: ឈ្មោះអ្នកបោះពុម្ពផ្សាយខ្សែ
- អ្នករៀបចំតំណ៖ ជីវ៉ានី
- ខែមេសា 5, 2022