extension rodextension ruleextension scale伸缩: stretch out and draw back; e ...尺: chi,a unit of length缩尺: contraction rule; shrinkage rule; shrink rule; reduced scale; scale◇缩尺图 scale drawing; 缩尺效应 scale effect; 缩尺影响 scale effect收缩尺: contraction gauge; molder's rule; shrink rule; shrinkage rule (or scale); shrinkage scale缩尺比: scale ratio下载手机词典可随时随地查词查翻译