draw tube वाक्य

उदाहरण वाक्य

1. The body, constructed of mahogany, has a single brass draw tube.
2. With a mandrel, a draw plate can be used to draw tubes of metal.
3. The last step, regarded as most important by Brewster, was to place the reflecting panes in a draw tube with a concave lens to distinctly introduce surrounding objects into the reflected pattern.