单词	union bend
释义	union bend union elbow union elbow A pipe elbow, 1 having a union-type coupling on one end, so that the coupling end may be connected to the end of a pipe without turning the pipe.
随便看	astronautics laboratory astronautic technology astronaut maneuvering unit astronaut medical evaluation requirements document astronaut memorial foundation astronaut positioning device astronauts astronaut scholarship foundation astronaut strength, conditioning and rehab team astronaut support personnel astronaut translation device astro-navigation astronavigation astronavigator astronest astronet graphic library a strong stomach astronium astronium fraxinifolium astronomer astronomer ptolemy astronomer royal astronomers astronomers and astrophysicists astronomers of humboldt

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