奥运主火炬分为5部分，分别是主体结构、点火系统、液压系统、自动化控制和火炬外饰。
The main Olympic torch into 5 parts, which are the main structure, the ignition system, hydraulic system, automatic control, and torch exterior.
奥运主火炬分为5部分，分别是主体结构、点火系统、液压系统、自动化控制和火炬外饰。
The main Olympic torch into 5 parts, which are the main structure, the ignition system, hydraulic system, automatic control, and torch exterior.
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