This text studies how to let out and control the coal gas of a district, and has designed a coal gas warning system of controlling.
本文就是学习如何对一个小区的煤气泄漏进行监控，并设计了一个监控四个单元的煤气报警系统。
Using macroeconomic leading index, synchronous index and lag index for reference, set up the economy early warning index system of gas field development.
借助宏观经济预警分析的领先指标、同步指标和滞后指标的方法，建立气田开发经济预警指标体系。
The system gives a strong technical support for the early warning and controlling of gas disaster and provides a reference for the prevention of gas accidents in coal enterprises.
系统为瓦斯灾害的预警和预控给出了强有力的技术支持，为煤炭企业瓦斯事故的预防提供借鉴。
It is very necessary to set up a dangerous ice warning system for the offshore oil and gas production and ice management for the protection from the ice in winter in Bohai Sea areas.
建立渤海冬季油气生产危险冰情报警系统和防冰减灾的海冰管理方法是很有必要的。
It is very necessary to set up a dangerous ice warning system for the offshore oil and gas production and ice management for the protection from the ice in winter in Bohai Sea areas.
建立渤海冬季油气生产危险冰情报警系统和防冰减灾的海冰管理方法是很有必要的。
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