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电路连接形式：螺旋七芯线快插头。
The form of air path connection: connected with spiral tube .
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七芯也被压在一起，一个普通的压力。
The seven cores were also pressurized together to a single common pressure.
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七芯也被压在一起，一个普通的压力。
The seven cores were also pressurized together to a single common pressure.
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