Auxiliary Power Supply System with Grid Connected Power Supply and High Frequency Converter Technology of Ningbo Rail Transit Vehicles

For the purpose of improving Dressing table the redundancy of the auxiliary power supply system of the metro vehicles, the grid connected power supply technology and the high-frequency converter technology were applied to line 4 and line 2 phase II project of the Ningbo metro.4 SIV were grid connected to provide AC 380 V to the metro vehicles which

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Characteristics of putative keystones in the healthy adult human gut microbiota as determined by correlation network analysis

Keystone species are thought to play a critical role in determining the structure and function of microbial communities.As they are important candidates for microbiome-targeted interventions, the identification and characterization of keystones is a pressing research goal.Both empirical as well as computational approaches Handbags to identify keyst

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