This text provides about the solution of a question of "line light source of the car light" in "2002 national university students mathematics modeling contest".

本文给出了“2002年全国大学生数学建模竞赛”中关于“车灯线光源”一题的解决方案。

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The trace occurrence is substantially the occurrence of intersection line of two oblique planes in space, which belongs to the mathematics field of solid geometry.

迹线的产状实质上是空间二斜面相交线的产状，属于立体几何学等数学范畴。

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"Mathematics curriculum standards" in must "for all students" is the formulation of new curriculum standards through a red line.

《数学课程标准》中的必须“面向全体学生”的表述是贯穿于新课程标准的一条红线。

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John Hannay, a theoretical physicist at Bristol University, believes he has come up with a three-line proof which shows beyond doubt that Dr Ardavan's mathematics must be flawed.

ECONOMIST: Physics

Overall English pupils achieved scores in line with the international average for maths in the 2003 Trends in International Mathematics and Science Study (TIMSS), with the top 10% of pupils' results comparable with those from some high achieving East Asian countries.

BBC: Top maths pupils 'fail to keep up with world's best'

The percentage of 14 year olds achieving the expected level was almost in line with statistical neighbours and was better than the national average for English, mathematics and science.

BBC: Kent's selective schools compared