TRL 4 - TECHNOLOGY READINESS
FOUR - Level 4 – Laboratory testing of prototype component or process
SCALE - The TRL scale is a metric for describing the maturity of a technology. The acronym stands for Technology Readiness Level. The scale consists of 9 levels. Each level characterises the progress in the development of a technology, from the idea (level 1) to the full deployment of the product in the marketplace (level 9).
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