Two new methods for making taper glass capillary tubes with ordinarydrawing machine were developed.
提出两种用普通毛细管拉制机制备变径玻璃毛细管的新方法。
2
According to the aluminum surface treatments can be divided into: ordinary spray, sand oxidation of alkali, alkali sand spraying, light wire drawing, champagne drawing, wood, electrophoresis.
根据铝材的表面处理可以分为：普通喷涂、碱砂氧化、碱砂喷涂、亮光拉丝、香槟拉丝、木纹、电泳。 。
3
Ordinary people may think creative drawing is an easy and carefree task, and a kind of expression form that requires little effort. Is that true?