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| 单词 | tray cell |
| 释义 | > as lemmastray cell tray cell n. a battery in which the sulphate of copper crystals are contained in a copper-lined or copper tray. ΚΠ 1878 Encycl. Brit. VIII. 94/1 The tray cell of Sir William Thomson, which consists of a large wooden tray lined with lead, the bottom of which is covered with copper by electrotyping. < as lemmas |
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