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单词 parallel rule
释义

parallel rule

noun

variants or parallel ruler
: an instrument for drawing a line parallel to another or a series of parallel lines: such as
a
: a flat rule running on a pair of rollers in one of its sides
b
: a pair of straightedges connected by two equal parallel links so that one straightedge can be moved only parallel to the other
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更新时间:2026/6/8 13:57:33