词汇	e-copy
释义	e-copy 电子副本
随便看	concave saw concave scraper concave sequence concave setting concave setting lever concave-setting lever concealed anterograde penetration concealed antigen concealed arch concealed area concealed articles Concave shape concave-shaped compact concave shapes concave shear concave sheath concave side concave side of blade concave simples method concave slide concave slide shoe for ball concave slope concave slope in open pit concave solid cutter concave space