This research aimed at the fatalness for using liquid rocket propellant in our country spaceflight launch site, applied the principle of safe system engineering to analysis the dangerous factors.

本研究针对我国航天发射场液体火箭推进剂作业中存在的危险性，利用安全系统工程原理，对推进剂作业的危险因素进行了系统分析。

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A safe initiation system is of great importance to engineering blasting.

安全起爆系统对于工程爆破是极为重要的。

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In order to resolve the problems of energy saving and safe operation of boiler water treatment device, applies computer supervisory control and data acquisition system on engineering design.

为了解决锅炉水处理装置节能和安全运行问题，在工程设计中采用了计算机监控和数据采集系统。

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