一些电缆是双芯的，其他的可能有五个、六个、十二个甚至更多芯。
Some cables have two wires while others may have five, six, twelve, or more wires.
国际领先- - -清馨负离子双芯技术，双效抑菌、双重护理。
International leading technology — FRESH NEGATIVE ion double-chip, double health.
芯线标识：红黄绿双。
应用双群理论计算了反应堆堆芯物理常数。
The physical parameters of the reactor core are calculated by method of the two-group theory.
应用双群理论计算了反应堆堆芯物理常数。
The physical parameters of the reactor core are calculated by method of the two-group theory.
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