ตัวกรองผลการค้นหา
flint
แปลว่าหินฟลินท์, หินเหล็กไฟ
flint and steel
แปลว่าหินเหล็กไฟ
Abrasive 1
แปลว่า(english) Material for grinding, polishing, blasting, either in loose form or bonded to form wheels, bricks, or files, or applied to paper and cloth by glue or resin. Natural abrasives include emery, corundum, garnet, sand, flint, etc. Metallic shot and grit are also used as abrasives in cleaning castings