饱和 (在一定温度压力下, 溶液可含溶质的量达到最大限度, 不能再溶解, 泛指事物达到最高限度) saturation; saturated 气体饱和 gas saturation; 旧汽车市场已经饱和。 the market for the used car is saturated.; 饱和参量 saturation parameter; 饱和值 saturation value
Avoid over - packaged products . waste from unnecessary packaging helps to fill up the landfills quickly 避免过多的包装,不必要的包装会加快堆填区的饱和速度。
This work was supported by the state science and technology ministry of p . r . china under the contact no . g20000683 - 06 , and by the national natural science foundation of p . r . china under grant no . 60046001 . gallium nitride is one of the 3rd generation semiconductor materials . from 1990 ' s , gan has attracted more and more attention and advanced rapidly , mainly due to its direct transition , wide band gap ( ~ 3 . 4ev ) and other excellent characters Gan是直接跃迁的宽带隙材料,具有禁带宽度大( 3 . 4ev ,远大于si的1 . 12ev ,也大于sic的3 . 0ev ) ,电子漂移饱和速度高,介电常数小,导热性能好等特点,在光电子器件和电子器件领域有着广泛的应用前景。