Definition: ESpring refers to an artificial, non-existent spring that appears in a virtual world simulation environment for visual display or user interaction purposes. In the context of a simulation environment where physical objects are represented as 3D models, ESpring can be used to create and manipulate structures that appear as a realistic, animated representation. The word "eSpring" typically refers to an artificial spring, which is designed to represent a hypothetical biological system in which energy is stored or released. In the context of a virtual world simulation environment for visual display or user interaction purposes, "eSpring" is often used to create and manipulate structures that simulate physiological processes such as muscle contractions or heartbeat. The term "eSpring" is often used to convey the idea that the simulation environment in which an artificial spring appears is not real but rather a simulated representation of some physical system. It can also be used to describe a type of animation effect where a 3D model is rotated or translated, simulating movement and motion. Overall, "eSpring" serves as a term for visualizing hypothetical structures or biological processes in a simulation environment, often using the concept of artificial, non-existent springs.