=== 命令说明====== zq--上一缩放zoom p zd--动态缩放zoom d ze--范围缩放zoom z z--zoom v--移动move c--复制copy q--平移pan t--偏移offset tt--镜像mirror rt--旋转rotate dss--距离dist aa--圆circle g--直线line gg--多段线pline dt--单行文本dtext r--放弃

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