surface impurity造句

Since aluminum is fairly nonabrasive it tends to remove surface impurities without affecting the part's surface qualities.
Higher densities, cleaner grain boundaries, and elimination of surface impurities can all be achieved with spark plasma sintering.
An example of the GDD operating at low voltage is shown with four images of the same field of view of a polished mineral containing aluminum, iron, silicon and some unknown surface impurities.
MOSFET, detailed later on, the channel consists of carriers in a surface impurity layer of opposite type to the substrate, and conductivity is decreased by application of a field that depletes carriers from this surface layer.
But, in practice, surface impurities within the part of the semiconductor that touches the metal terminals will greatly reduce the width of those depletion layers to such an extent that the metal-semiconductor junctions do not act as diodes.
It's difficult to find surface impurity in a sentence. 用surface impurity造句挺难的

Knowing the background carrier concentration N _ \ text { B } and the surface impurity concentration, the " sheet resistance-junction depth " product R _ \ text { s } x _ \ text { j } can be found using Irvin's curves, which are numerical solutions to the above equation.