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| extended time test; long-time test | |||
| long-term experiment; long-term experiment 1. Experiment lasting for a relatively long period of time. 2. Experiment whose results become effective after a long period of time | |||
| prolonged experiment | |||
| long-term test | |||
| long term test; test of long duration | |||
| long-duration creep-rupture test | |||
