Removed cuts can be omitted the sectional symbol , but the labeling of cutting position and cut views should be fit the rules as shown in fig . 15 在不致引起誤解的情況下,機件圖中的移出斷面允許省略剖面符號,但剖切位置和斷面圖的標注必須遵照原來的規(guī)定,如圖15所示。
Waved lines can ' t be drawn in holes , grooves or outside the outlines , because there are no broken trails . if the cutting position is obvious , it needn ' t be signed 波浪線不應畫在通孔、通槽內(nèi)或畫在輪廓線外,因為這些地方?jīng)]有斷裂痕跡。剖切位置明顯的局部剖視圖可以不標注。
If the superposition cuts is symmetrical , the labeling can be omitted . otherwise , it must be labeled with a cutting symbol with arrows , but the letters may be omitted 對稱的重合斷面不必標注剖切位置和斷面圖的名稱。不對稱重合斷面在剖切符號處標注投射方向,但不必標注字母。