本文从可靠性理论的基本概念出发,推出了不可维修和可维修的串联系统、并联系统和网络系统的可靠性计算的全部公式。这些公式概念清晰,使用方便,容易记忆。本文原为船舶导航系统方案的论证工作而写,但所阐述的公式对船舶的其它系统和某些实际工程的应用都是简单而有效的。 Based on the basic concept of reliability theory, this paper introduces all the formulas for the reliability calculation of unserviceable and repairable tandem systems, parallel systems and network systems. The concept of these formulas is clear, easy to use, easy to remember. This article was originally written for the demonstration of the ship navigation system program. However, the formulas formulated are simple and effective for other ship systems and some practical applications.