芯線

1. Origins, structure, and basic meaning

• Structure: 芯線(しんせん) refers to the core wire or conductor inside a wire or cable.
• Basic usage: It is used when describing stripping insulation, connecting terminals, or inspecting cable damage.

2. Common pitfalls and similar expressions

• Core and covering
  • 芯線 is the inner conducting part; 被覆(ひふく) is the covering around it.
• A geometric centerline
  • 中心線(ちゅうしんせん) can refer to a line through the center of a shape or object.
  • 芯線 refers to a physical wire inside a cable.