test piece; test specimen; product under test
Technical term used in engineering, materials testing, and quality control for an item subjected to testing.
This test specimen is used for tensile testing.
Please measure the dimensions of the test piece accurately.
Compound of 供 (provide) + 試 (test) + 体 (body), literally 'body provided for testing'. The exact historical derivation is uncertain; the spelling is conventionally associated with the meaning.