The upper Radiant Heating surface is covered with a very fine multi-faceted acute-angle silicon surface manufactured in New Mexico.

上部辐射采暖表面覆盖着一个非常精细的多面性急性角在新墨西哥州生产硅表面。

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Right triangle: One of the three angles is a right Angle. The other two are acute angles.

直角三角形：有一个角是直角，有两个角是锐角。

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Methods in our 54 cases of primary acute angle-closure glaucoma were analyzed retrospectively, giving patients a reasonable and effective treatment means nursing measure.

方法对本院54例原发性急性闭角型青光眼患者的临床资料进行回顾性分析，给予患者合理的治疗手段及有效的护理措施。

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Burnley started strongly in the second half, Robbie Blake forcing a good low diving save from Cudicini, and later hitting a post with a rebound from an acute angle after the goalkeeper fumbled a free-kick.

BBC: Tottenham Hotspur 5-0 Burnley

Villa led 2-0 at the break through a Richard Dunne header and a finish from an acute angle by Darren Bent.

BBC: Arsenal 3-2 Aston Villa

Kevin Campbell threatened for the Baggies, stinging Jamie Ashdown's fingers with a shot from an acute angle, while Aliou Cisse drove wide for Pompey from 25 yards.

BBC: SPORT | Football | Premiership | West Brom 2-0 Portsmouth