同轴电缆由屏蔽包围的单芯导体组成(图2 -54a)，而三同轴电缆在第一层屏蔽之外又加入了第二层屏蔽(图2 - 54b)。

A coaxial cable consists of a single conductor surrounded by a shield (Figure 2-54a), while a triaxial cable adds a second shield around the first (Figure 2-54b).

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同轴电缆由屏蔽包围的单芯导体组成(图2 -54a)，而三同轴电缆在第一层屏蔽之外又加入了第二层屏蔽(图2 - 54b)。

A coaxial cable consists of a single conductor surrounded by a shield (Figure 2-54a), while a triaxial cable adds a second shield around the first (Figure 2-54b).

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