Shall consist of clean, unalloyed, uncoated copper scrap clippings, punchings, bus bars, commutator segments and wire not less than 1/16 of the inch thick, free o burnt wire which is brittle;
此铜线要求是干,
经包裹
纯粹铜片、铜屑、汽车门闩、换向器切片,且铜线
厚度
少于1/16英寸,免烧易碎
铜线;