It has been about a hundred years when the marketing was born from a system ideal to a more mature theoretical framework.
市场营销从系统的思想诞生到现在较为成熟的理论框架，大约经过了一百余年。
The optimal operation of heating system can promote system ideal efficiency, which improves the running economy and reduces costs.
供热系统的优化运行可以发挥整个系统的理想效能，提高系统的运行效率和经济性。
The DR1000 Speed Switch is a complete precision rotation monitoring system ideal for detecting unwanted slowdown or stoppage of process equipment.
DR 1000型转速开关是一款精密的旋转检测系统，用于检测加工设备不必要的减速和停机状况。
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