Similarly, a current transformer is connected with its primary in the high-voltage circuit.

同样，电流互感器是与它的主要的高电压电路。

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Primary wires. Low voltage wires used to connect the electrical components of the primary circuit.

初级导线。低压导线用来连接初级回路的各个部件。

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Electronic control unit. Contains a switching transistor controlled by a speed sensor and is used to open and close the primary circuit.

电子控制单元。包括由转速传感器控制的开关晶体管，用来断开或接通初级电路。

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First of all, the company continues to grab market share after its primary competitor, Circuit City, declared bankruptcy last year and drastically reduced operations.

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Morean who built Jabil Circuit into one of the primary providers of electronic circuitry to the computer industry titans like Cisco, Hewlett-Packard and other.

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