Each home boasts an unprecedented level of quality throughout.每家的质量都堪称一流。China's industry is developing at an unprecedented rate.中国工业正以空前的速度发展.This achievement is surely unprecedented.这成就确实是空前的....
加色法原色: 是指光的颜色.Additive primary colours: Refer to the colour of light.在光记录技术中, 指光道上两个凹槽之间的区域.In optical recording, refers to the areas of the data tracks are between the pits....