单词	比密度
释义	比密度医specific density
随便看	Size of urban planning land size of urban population size of pipe size of pipe and tubing size of pipeline size of plastic zone size of platen size of population size of pregnant women size of product size of protected unit size of public debt size of q wave size of refrigerator size of rope size of rubber footwear size of sample size of screen surface size of seal contact face size of separation size of separation zone size of settlement Size of silo outlet flange size of soil particle size of space