单词 | striation |
释义 | striation [strī`ā·shǝn] ELECTRONICS A succession of alternately luminous and dark regions sometimes observed in the positive column of a glow-discharge tube near the anode. GEOLOGY One of a series of parallel or subparallel scratches, small furrows, or lines on the surface of a rock or rock fragment; usually inscribed by rock fragments embedded at the base of a moving glacier. MINERALOGY One of a series of parallel, shallow depressions or narrow bands on the cleavage face of a mineral caused either by growth twinning or oscillatory growth of different crystal faces. |
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