Does this mean space is shaped like a flat plane, a sphere or a saddle?
是不是这就意味着宇宙的形状就是平面、封闭球体或者马鞍状？
In a negative curvature model, two lines that would be parallel on a flat plane will extend away from each other.
在负曲率模型下，平面上平行的两条线可能彼此远离。
A sphere cannot be represented on a flat plane without distortion, which means all map projections distort in one way or another.
球体在平面上不进行扭曲就无法表现出来，这意味着所有制图方式都会以某种方式出现扭曲。
Maps (on paper or on the screen) are flat surfaces; they require a transformation from the curved surface of the earth to the flat plane: a map projection.
纸上或屏幕上的地图是平面的；它们需要从地球的曲面向平面进行转换：地图投影。
The eight planets of our solar system orbit in the same direction along what's called the ecliptic, a flat plane that's nearly aligned with the sun's equator.
太阳系中的八大行星都沿着同一方向在被叫作黄道面(这一平面与太阳赤道面形成微小的夹角)运行。
Organic light-emitting device (OLED) is a promising candidate for next generation flat plane display (FPD).
有机电致发光器件(OLED)的一个重要用途是在平板显示领域。
The common calculating methods, i. e. using periodic boundary condition and curved surface replaced by flat plane, were discarded.
摈弃了目前国际上通常采用的周期边界条件，以及以平板代替曲面的做法。
A Cartesian coordinates robotic system was developed to transplant tissue culture plantlets or scions from a flat plane to culture flasks in order to minimize the need of labor.
本研究设置一套直角座标机器人系统，用以扦挿移植组织培养苗至培养瓶或相关容器中，期能取代移植作业的人工，降低此一产业的人力需求。
The vibration equation for thin flat plane loudspeaker with single point drive and four corners fixed is deduced and its simple harmonic vibration frequency in this condition is analyzed.
推导了固定四角薄型平板扬声器在单点激励下的振动方程，分析了在受激情况下的简正频率，并由简正频率方程导出其受力方程。
The results indicate that the vibration of thin flat plane loudspeaker with four corners fixed is anomalistic and the vibration radiation at far sound field doesn't have any directionality.
分析结果表明固定四角薄型平板的振动是不规则的，在远声场振动辐射是无指向性的。
The results indicate that the vibration of thin flat plane loudspeaker with four corners fixed is anomalistic and the vibration radiation at far sound field doesn't have any directionality.
分析结果表明固定四角薄型平板的振动是不规则的，在远声场振动辐射是无指向性的。
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