鎖さ線せん

noun

chain line; dot-dash line

Technical term used in drafting, design, and mapping for a line pattern of alternating long and short dashes, often indicating hidden edges or centerlines.

• 図ず面めんでは、隠かくれた部ぶ分ぶんを鎖さ線せんで示しめす。

  In the drawing, hidden parts are shown with a chain line.

• この地ち図ずの鎖さ線せんは行ぎょう政せい境きょう界かいを表あらわしている。

  The dot-dash line on this map indicates the administrative boundary.