A loudspeaker which emits sound of frequency 1000 Hz is placed several meters from a plane reflecting wall in a large chamber containing a gas.
扬声器发射的声音频率1000赫兹是放置数米，从平面反映墙在一个大型会议厅，载有天然气。
The angular displacement of reflecting surface is measured in accordance with the direction change of Moire fringes caused by the inclination of grating. self-imaging plane.
利用光栅自成象面的倾斜引起莫尔条纹方向变化来测量反射表面的角位移。
The art of calligraphy shows a process reflecting and concretizing a solid line on a two dimensional plane in a period of time. This kind of visual art also has the traits of the art of the time.
书法艺术在二维平面上表现和凝固了一根立体线条在时间里的一段流程，因而这一视觉造型艺术兼有了时间艺术的一些特点。
The principles of microstrip balun and printed dipole were analyzed, and the antennas ground plane was extended and shaped to form the reflecting structure.
分析微带巴伦和印制偶极子的工作原理，延伸并成形天线的地平面以得到反射结构。
An artistic presentation, the image shows spiky foreground stars in our own Milky Way Galaxy and convoluted dust clouds that hang above our galactic plane, dimly reflecting starlight.
上面的影像是一张艺术家的印象画，显示的是我们银河系内针芒似的前景恒星，旋转的尘埃云悬挂在我们银河系盘面上，昏暗地反射出星光。
When the rotation were found on the cleavage plane appear half reflecting feldspar, half are not reflective, this is when a white reflective Carlsbad twin;
当旋转标本，发现长石解理面上出现一半反光，一半不反光时，此即为卡斯巴双晶；
When the rotation were found on the cleavage plane appear half reflecting feldspar, half are not reflective, this is when a white reflective Carlsbad twin;
当旋转标本，发现长石解理面上出现一半反光，一半不反光时，此即为卡斯巴双晶；
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