单词 | intensifier |
释义 | intensifier [in`ten·sǝ ´fī·ǝr] GRAPHIC ARTS In photography, a means used to strengthen the image of either a negative or a positive; usually, metal is added to the silver image, and the increase in density is proportional to the existing density; thus when a negative is intensified, the highlights are always intensified more than the shadows. PETROLEUM ENGINEERING Hydrofluoric acid added to hydrochloric acid for oil well acidizing; the fluoride destroys silica films that are insoluble by hydrochloric acid. |
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