Is it true that the earth's crust does a 180-degreerotation around the core in a matter of days if not hours?
地球的外壳将会在几天如果不是几小时之内的话围绕地心旋转180度的说法是真的吗？
2
The Manfrotto 303 also allows the user to set the degreeof camera rotation set in relation to the focal length of the lens being used.
曼富图303云台还可允许用户设定相机旋转角度和配套的镜头焦距长度。
3
The effect of spinning temperature, spinning pressure and rotation velocity on the fiber's degreeof profile and effective filament diameter was analyzed.