Global Nuclear Magnetic Double Resonance Spectrometer Market By Type (Sub-100MHz , 300-400 MHz , 500 MHz , 600 MHz , 700-750 MHz , 800-850 MHz , and 900+ MHz), By Application (Academic, Pharma/Biotech, Chemical, Agriculture & Food, and Oil & Gas), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2019-2028