这两条线相交成锐角。
直角三角形：有一个角是直角，有两个角是锐角。
Right triangle: One of the three angles is a right Angle. The other two are acute angles.
钝角三角形：有一个角是钝角，有两个角是锐角。
Obtuse triangle: One of the three angles is an obtuse Angle. The other two are acute angles.
一种带有四个等边构成两个内钝角和两个锐角的图形；菱形或菱形物。
A figure with four equal sides forming two inner obtuse Angles and two inner acute Angles; a rhombus or lozenge.
该晶体具有两个不同杂质层，在希望高透的锐角方向，它们的缺陷态具有相同的频率；
The crystal has two different impurity layers, and in the acute angle direction of the high transmission expected, their detect state has the same frequency;
该晶体具有两个不同杂质层，在希望高透的锐角方向，它们的缺陷态具有相同的频率；
The crystal has two different impurity layers, and in the acute angle direction of the high transmission expected, their detect state has the same frequency;
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