a tube terminating in a bulb.
| 单词 | θ99105 |
| 释义 | the world > space > shape > curvature > curved three-dimensional shape or body > cylinder > [noun] > quality of being hollow cylinder > hollow cylinder or tube > other types (2) bulb-tube1839 a tube terminating in a bulb. vacuum tube1859 An evacuated tube (sense 2g) (originally a glass cylinder); spec. one used as a thermionic valve. |
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