before-and-after test
... before or after the event 发作前或发作后,事前或事后 before-after study 后对照研究 before-and-after test 辐照前后试验 ...
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论述了辐照后包壳管在热室中的拉伸、爆破、蠕变等试验方法，比较辐照前后包壳力学性能的变化。
Tensile test, tube burst test and creep test of irradiated cladding in hot cell were discussed. The changes of mechanical properties of cladding before and after irradiation were compared.
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