COAXIAL cable, an electrical cable usually connecting an antenna with a receiver or transmitter. The cable has an inner conductor and an outer groundedshield.
同轴电缆，一种通常用来联接天线与接收机或发射机的电缆。电缆由中心导体和外层的屏蔽所组成。
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In a high vacuum system, the vacuum chamber, which is commonly grounded, ACTS as the shield.