- a small valve for checking the water level in a steam boiler or draining condensed steam from the cylinder of a steam engine
单词 | petcock |
释义 | WordReference Random House Unabridged Dictionary of American English © 2024 pet•cock (pet′kok′),USA pronunciation n.
Collins Concise English Dictionary © HarperCollins Publishers:: petcock /ˈpɛtˌkɒk/ n
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