an automatic device activated by the heat of the sun, serving to control the operation of the light of a lighthouse, beacon, etc.
单词 | θ206398 |
释义 | society > travel > travel by water > vessel, ship, or boat > buoys, marks, or lighthouses > [noun] > object on land or sea as guide > light beacon or lighthouse > valve activating (1) sun valve1908 an automatic device activated by the heat of the sun, serving to control the operation of the light of a lighthouse, beacon, etc. |
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