英语词汇parallel-ruler怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	parallel-ruler
释义	parallel ruler noun /ˌpærəlel ˈruːlə(r)/ /ˌpærəlel ˈruːlər/ a device for drawing lines that are always the same distance apart, consisting of two connected rulers平行线尺（由两把相连接的尺子组成）
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parallel ruler