atmospheric pressure

pressure at a point due to the weight of the column of air above it 大气压力.

atavism, atavistic, ate, atelier, atheism, atheist, atheistic, Athelney, Athens, athlete, athlete's foot, athletic, athletics, athwart, atishoo, Atlanta, Atlantic, atlas, atmosphere, atmospheric, atmospherics, atoll, atom, atom bomb, atomic, atomic bomb (also A-bomb, atom bomb), atomic energy, atomic number, atomic pile, atomize, atomise, atomizer, -iser, atonal, atonality, atone, atonement, atop, atrocious, atrociously, atrociousness, atrocity,