Author name: admin

An assembly room for precision products whose quality would be affected by dust, lint, or airborne pathogens; usually has smooth […]

Electric power having a relative absence of electrical noise and harmonics so that its voltage waveform is essentially a sine

The movable part of a window which opens only for cleaning the window; usually unlocked with a special key or

In masonry, the visible end of a stone laid as a bondstone.

Fine or coarse aggregate, free of such material as clay, silt, or organic substances.