由于有机发光二极管本身能通过电流使有机化合物发光，不需要背光照明，因此可以做得比液晶显示器更轻、更薄，更有柔韧性。
Because OLEDs do not need to be backlit-they get their lighting from organic compounds that emit light in response to electric current-they can be thinner, lighter and more flexible than LCDs.
其中有一个初始的细菌经历了一次变异，使它分泌出了一种有机化学物质乙酸酯。
One of the original bugs had undergone a mutation that caused it to excrete acetate , an organic chemical.
该文概述了使纸厂废水中的有机化合物，以及其分离提取技术和毒性特征测试方法。
This paper summarizes organic compounds in paper-mill effluent, the methodologies used for their analysis and determination of their toxicological characterization.
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