Fifty years later, lasers are a staple in everything from astronomy, surgery and DVD players to cutting sheet metal.
五十年后，激光的用途遍及天文学、外科手术、DVD播放器到金属切割。
2
The first prism consists of a black metal structure that ends on an exposed concrete staple.
第一个棱体由黑色金属结构组成，一端对着素混凝土主体。
3
A method is introduced, which mix polyester chip and metal-oxide powder, then spin staple fibre, the fibre has antistatic property as its resistance is 1.