Distortion Phenomenon Analysis of 3m Ruler Used in the Test of Hot Surface Smooth 3m直尺用于热铺层平整度检测时的'热变形现象分析 The teacher came in and a ruler was in his hand. 老师走进教室，手里拿着一把直尺。 Take out a ruler draw a line. 拿出直尺，画条线； Proportional servo valve, grid ruler and CNC machine tool 伺服比例阀、光栅直尺与数控机床 At breast height, measure the trunk diameter by a ruler. 在胸部高度的位置，用一把直尺量度干径。 上一篇：女生学什么专业就业前景好 下一篇：u开头的单词有哪些 |