tooth spacing angle
美
[tuθ ˈspesɪŋ ˈæŋɡəl]
英
[tu:θ ˈspeisiŋ ˈæŋɡl]
[机] 齿间角
Examples
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美[tuθ ˈspesɪŋ ˈæŋɡəl]英[tu:θ ˈspeisiŋ ˈæŋɡl]
[机] 齿间角