Two sets of brake devices a hand brake and foot pedal brake assure the machine's safety and dependability.

手刹车和脚刹车两套制动装置，保证机器的安全性和可靠性。

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Then the safety and dependability of the steer-by-wire system is analyzed, a hard and soft architecture suitable for the system is presented.

然后对线控转向系统的安全性、可靠性进行分析，提出了线控转向系统的硬件和软件总体结构。

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Gas sensor plays an important role in monitor system, and then the development of a high sensitive gas sensor system with great safety and dependability has great social and economical significance.

瓦斯传感器对监测监控起着决定作用，因此研制开发安全可靠、高灵敏度的瓦斯传感系统具有重大的社会意义和经济意义。

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