... lattice-ordered || 格序的 latus rectum || 正焦弦 launch || ①发射,创办,开始,起飞,启动,下水(船的),投掷②汽艇 ...
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semi-latus rectum 半正焦弦 ; 半通径
Half latus rectum p 丰正焦弦p
latus s rectum 首通径
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N a chord that passes through the focus of a conic and is perpendicular to the major axis 正焦弦 [geometry]
The buffering speed is controlled by the latus rectum of the buffering valve hole.
缓冲速度的快慢由缓冲阀孔的通径决定。
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