| 单词 | photochronograph |
| 释义 | photochronograph(ˌfəʊtəʊˈkrɒnəˌɡrɑːf, -ˌɡræf) noun physics an instrument for measuring very small time intervals by the trace made by a beam of light on a moving photographic film Derived forms photochronography (ˌfəʊtəʊkrəˈnɒɡrəfɪ) noun |
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