单词	x-
释义	同ray-- x-
随便看	p.d.r p.d.r. pdr pdr. pd radar p-d ratio pdr--page data register pdr--page descriptor register p.d.r-- precision depth recorder p.d.r; precision depth recorder pdr--process dynamic recorder pdry pds p.d.s.a. pdsa pdsa循环 pds--personnel data system pds--program data set pds--programmable data system p-d station p.d.t. pdt pdta pdt--portable display terminal pdt--programmable data terminal