分析了天然气价格变化趋势及管输天然气备用气源的选择。
The variation trends of natural gas price and selection of stand-by gas sources for piped natural gas are analyzed.
提出了一种利用神经网络BP算法模型于发现和预测商业市场价格变化趋势的模型。
This paper puts forward a model of discovering and forecasting price trend in market, based on neural networks BP algorithms.
了解竞争产品的价格与性能，与客户保持密切接触，分析价格变化趋势，掌握市场情报。
Maintain a high level of market intelligence by monitoring the performance of competition product and analyzing price change trend through close contact with customer.
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