General Process of 3D printing
FDM - Fused Deposition Molding
FDM works on an "additive" principle by laying down material in layers.
The model is produced by extruding small beads of thermoplastic material to form layers as the material hardens immediately after extrusion from the nozzle.
The nozzle can be moved in both horizontal and vertical directions by a numerically controlled mechanism
generate enough power.
Clean Diesel
The diesel car has been recognized as the main culprit of air pollution, but people are beginning to understand the diesel car in a different way. The clean diesel engine has a mechanism of compressed air and blast, and it enables the engine to generate the same power as gasoline engine with 30-40% less fuel. It is recognized as an environmentally-friend
generally.
According the CNN take about the safest airlines, we know that commercial aviation is one of the most heavily monitored industries in the world and statistically the much-cited comparison bears out: you are much less likely to die in an airplane crash than in a car accident. Moreover, in these days, for safety sensitive to the social atmosphere, the safety is the most important ar
an equivalent amount, and the process is repeated. In order to build an object the controlling drawing for each layer changes very slightly.
Typical standard manufacturing methods are subtractive, that is material is removed from a base form by machining with a lathe, with a drill, by cutting, planing or broaching. By contrast 3D-printing is an additive process, because material is added, layer
general the particular solution is complicated to find. By limiting the right hand side (RHS) in the equation to a polynomial-exponential family of functions we can however find the particular solution in a closed form.
We show that the homogeneous solution is a linear combination of exponential functions and the particular solution is of the same form as the RHS of the equation with an increase