n.密集( density的名词复数 )；稠密；密度（固体、液体或气体单位体积的质量）；密度（磁盘存贮数据的可用空间） 双语释义：n.(名词)[U]密集,稠密 the quality of being dense[C][U]密度 relation of mass to volume英英释义： densityn.the amount per unit size同义词：densenessthe spatial property of being crowded together同义词：concentratio