单词 | worm |
释义 | worm [wǝrm] DESIGN ENGINEERING A shank having at least one complete tooth (thread) around the pitch surface; the driver of a worm gear. INVERTEBRATE ZOOLOGY 1. The common name for members of the Annelida. 2. Any of various elongated, naked, soft-bodied animals resembling an earthworm. METALLURGY Sweat of molten metal which exudes through the crust of solidifying metal in a casting, and is caused by gas evolution. |
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