Whether external threads or internal threads, the section lines in the sectional views should be drawn intersecting with the thick solid lines.
举一反三
- Which of the following lines are used as dimension lines， extension lines， leader lines， construction lines， section lines and projection lines？（ ） A: Thin phantom lines B: Thin solid lines C: Thin center lines D: Wavy lines
- Mooring lines include head lines, stern lines, spring lines and breast lines.? 正确|错误
- 中国大学MOOC: Mooring lines include head lines, stern lines, spring lines and breast lines.
- Basically, lines can be used in three ways in drawing: to be used as contour lines, hatching lines, and cross-hatching lines.
- ______ lines are, by definition, lines on the same plane that never join. A: Lateral B: Intersecting C: Vertical D: Parallel