selenite plate वाक्य

उदाहरण वाक्य

1. The quartz wedge or selenite plate enables us to do this.
2. Selenite wedges, selenite plates, mica wedges and mica plates are also used for this purpose.
3. The quartz wedge, quarter mica plate or selenite plate permit the determination of the positive or negative character of the crystal by the changes in the color or shape of the figures observed in the field.