一根或二根单芯电缆不允许敷设在铁质管道中。
Remark One or two singal-core cable not allowed laying in iron pipe.
要知道，有俩种二分量视频电缆：4芯和7芯。
Remember, there are two types of S-Video cables: 4-pin and 7-pin.
热缩指套用于电缆分叉处的绝缘盒密封保护，有二芯、三芯、四芯、五芯规格产品。
Yonggu heat shrinkable for protection of insulation and sealing in fork position. it includes two cores. threecores. four cores, five cores.
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).
热缩指套用于电缆分支叉处的绝缘和密封保护，有二芯、三芯、四芯、五芯的产品。
Heat shrinkable finger sleeve is suitable for protection of insulation and sealing in fork position. It includes two cores, three cores, four cores, five cores.
热缩指套用于电缆分支叉处的绝缘和密封保护，有二芯、三芯、四芯、五芯的产品。
Heat shrinkable finger sleeve is suitable for protection of insulation and sealing in fork position. It includes two cores, three cores, four cores, five cores.
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