The manufacturing accuracy of ultra-precision master gears signifies the technological capability of the ultra-precision gear. Currently, there is little report
Parallel kinematic machines (PKMs) have the advantages of a compact structure, high stiffness, a low moving inertia, and a high load/weight ratio. PKMs have bee
The solder joint reliability of quad flat non-lead (QFN) package, which has become very popular over the past few years, has received intense interest. The fini