固体火箭发动机设计是一项复杂的系统工程。
Solid rocket motor design is a complicated systems engineering.
实验表明，移动机器人本体及远程控制系统达到了设计目标。
Experiments show that the mobile robot and its remote control system meet the design goals.
实验表明，移动机器人本体及远程控制系统达到了设计目标。
Experiments show that the mobile robot and its remote control system meet the design goals.
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