C4 pathway A pathway of carbon fixation, found most commonly in tropical plants that have high rates of growth and photosynthesis and that are adapted to high temperatures, strong light, low carbon dioxide levels, and low water supply. Its importance lies mainly in its reduction of photorespiration.
PT 100 RTD means Resistance temperature detector(RTD) of platinum with 100 ohms resistance at zero degree centigrade.
CTD: Central Tracking Detector: CTD: Counter-Top Display: CTD: Certified TestStand Developer (National Instruments Corporation) CTD: Collective Training Directorate (US Army Combined Arms Center-Training) CTD: Carpal Tunnel Decompression: CTD: Contract-to-Date: CTD: Coastally-Trapped Disturbance (weather) CTD: Cost-To-Date: CTD: Continuity Tone Detector: CTD: Cold Temperature/Dry: CTD