In the past few days, the monitor's choices range from 4K, 5K, and even 8K. We also saw how the monitors have come a long way. They are very thin and have an almost baffled free design. However, it is likely to change in the future. Now is a floating display for solving and designing? By adjusting the sound, it will cause the bead to move and change its position. Then, the researchers tried to draw on the side of the black beads, coated them with titanium dioxide, and the end result was that the directions could be changed to show different colors (in this case, black or white) beads.
CNC Milling is to use the rotating multitool to cut workpieces, such processing method is efficient. Tool rotate (background) while working, and the workpieces move (as a feed movement), workpieces can also be fixed, but at the moment, rotate tool must also move (at the same time to complete the main motion and feed motion).Milling machine has a horizontal milling machine or vertical milling machine, large gantry milling machine.The machine tool can be ordinary machine tool, can also be a nc machine tools. With rotating cutter as a cutting tool.Milling is generally conducted on milling and boring machine, suitable for processing plane, groove, all kinds of forming surface (such as spline gear and thread) and special shape mould surface, etc
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Recently, researchers at the University of Bristol have created a display that can be suspended in the air and actually float to the power of using ultrasound. The researchers' video above shows how their technology can be suspended by using tiny polystyrene beads, for the placement of the speakers above and below them, with each bead sitting on the ultrasound port. 
Of course this is not exactly a very high resolution monitor because it is made of beads in a 6 x 7 grid, but it is an interesting development. Some potential uses in business or travel settings have been suggested.
The characteristic of the CNC Milling is:
(1) cutter blade periodically participate in continuous cutting.
(2) each blade in the process of cutting, cutting thickness is variable.
(3) each tooth feeding alpha f (mm/teeth), said cutter every turn a blade workpieces relative displacement of time.