第二頸椎 影片素材 第1頁

A vibrant digital graph showcasing dynamic data trends with bright colors and abstract lines

wooden propeller rotating

3d axis

propeller, rotating fan propeller animated rotating fan propeller green screen croma 4k looping

propeller, rotating fan propeller animated rotating fan propeller green screen croma 4k looping

propeller, rotating fan propeller animated rotating fan propeller green screen croma 4k looping

propeller, rotating fan propeller animated rotating fan propeller green screen croma 4k looping

motion of physics, lever is a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge or fulcrum, leverage is mechanical advantage gained in a system, law of the lever

motion of physics, lever is a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge or fulcrum, the relative positions of the fulcrum, effort and resistance, Law of the lever

Educational diagram showing four types of parabolas with directional openings. Includes equations and vertex positions, ideal for teaching math concepts in geometry and conic sections

propeller, rotating fan propeller animated rotating fan propeller green screen croma 4k looping

propeller, rotating fan propeller animated rotating fan propeller green screen croma 4k looping

propeller, rotating fan propeller animated rotating fan propeller green screen croma 4k looping

CNC lathe milling machine cutting featuring high precision the metal part , The hi-technology parts manufacturing

An educational infographic illustrates five crystal systems: cubic, tetragonal, monoclinic, triclinic, and hexagonal. Each form is visually distinct, using simple colors and minimalistic 3D shapes

propeller, rotating fan propeller animated rotating fan propeller green screen croma 4k looping

Educational waveform diagram showing a sine wave cycle with angular degrees labeled. Includes visual markers for quarter turn, half turn, and complete rotation, physics and trigonometry learning

Ticking Clock face with moving hands on a quartz watch with chronograph

Labeled diagram of a parabola showing key elements such as vertex, focus, directrix, latus rectum, and axis of symmetry. Ideal for math tutorials, textbooks, educational, physics

Labeled diagram of a parabola showing key elements such as vertex, focus, directrix, latus rectum, and axis of symmetry. Ideal for math tutorials, textbooks, educational, physics

Educational math diagram illustrating how to find the midpoint of a line segment using coordinates. Clear formula and labeled points help students and teachers visualize and understand concept easily

Ticking Clock face with moving hands on a quartz watch with chronograph

The 5 axis CNC milling machine cutting the mold parts with liquid coolant method. The high precision parts cutting production by multi axis CNC milling machine.

Slow motion scene the EDM machine working with graphite electrode. The mold and die manufacturing process by EDM machine.

Educational math infographic showing the difference between a linear equation and a quadratic parabola with labeled graphs. Ideal for teachers, students, and online math tutorials