单词	desaturate
释义	desaturate /diːˈsatʃəreɪt / verb [with object] Make unsaturated or less saturated: high ambient lighting will desaturate colours... The colors are alternately desaturated and deeply saturated, which probably figures into the complex narrative structure in some way. They oppose it with tint, which is the opposite process of adding white to a colour, to desaturate it. Stronger saturations call for a much louder voice, where desaturated schemes lend themselves to a much lighter touch. Derivatives desaturation /diːsatʃəˈrɛɪʃ(ə)n/ noun ... Without knowing polysomnography results, a single technician computed the oximetry desaturation index from 379 studies as the number of desaturations at or exceeding 3% magnitude divided by test duration in hours. In plants and cyanobacteria, these steps are catalysed by two enzymes, phytoene desaturase and carotene desaturase, each mediating two symmetrically positioned desaturations. The mechanisms of persistent sleepiness in treated sleep apnea are presently not known, but severity of oxyhemoglobin desaturations best predicts sleepiness in persons with obstructive sleep apnea.
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