ตัวกรองผลการค้นหา
Accordion Reed Steel
แปลว่า(english) Hardened, tempered, polished and blued or yellow flat steel with dressed edges. Carbon content about 1.00. Material has to possess good flatness, uniform hardness and high elasticity.
Blue Vitriol Copper sulfate
แปลว่า(english) A layout solution which turns a copper color when applied to a clean,polished metal surface.