heptagon copper wire

例句：

1. 1. This heptagon copper wire is used in theconstruction of buildings.
   这种七边形铜线用于建筑施工。
2. 2. The heptagon copperwire was installed by a professional electrician.
   这种七边形铜线是由专业电工安装的。
3. 3. The heptagon copper wireis known for its durability and strength.
   这种七边形铜线以其耐用性和强度而闻名。