?标准砝码

... 环形 annular; ringlike; ring form; bight; annularity◇环形癌 annular carcinoma; 环形电路 [讯] loop circuit; ring circuit; 环形公路 belt highway; 环形交通 rotary traffic; 环形交通枢纽 circle; circus; 环形结构 circle structure; 环形联合 circular integration; 环形路 round; 环形山 [天文学] lunar crater; crater; ring structure; 环形天线 loop; box loop; ring antenna; loop antenna; coil antenna; closed aerial; radio loop; 环形铁路 belt(-line) railroad; circuit railroad 标准砝码 standard test weight; standard weights; weight standard 秤砣；砝码；重锤 weight ...