中国？ 广东华昌伟业公司是造就一流人才，面向全球的防盗报警产品专业研发制造商。
Guangdong Hovicom China is a professional R&D manufacturer of security product which builds top-grade talents and targets the world.
介绍了语音报警产品在煤矿安全生产中应用的意义及煤矿设备中语音报警电路的工作原理。
The paper introduced the application sense of sound alarming pro- ducts in colliery safe production and working principle of the sound alarming circuit in colliery equipment.
它们包括一个早期报警系统，以此来确保变化对需求的影响可以跨过产品版本被分析，并在需要的时候被处理。
They comprise an early warning system to ensure that the impact of changes to requirements across product versions are analyzed and dealt with as needed.
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