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an electrical component designed to limit or control the flow of electric current in a circuit, typically by providing resistance
电阻器, 电阻
the branch of physical science that deals with the relationships between heat, work, and energy, particularly the principles governing the conversion of various forms of energy
热力学
(physics) an invisible substance that makes up most of the universe's mass, detectable only through its gravitational effects
暗物质, 暗质
a fundamental particle of light that carries electromagnetic energy and exhibits both particle-like and wave-like properties
光子
the distance between a point on a wave of energy and a similar point on the next wave
波长
the action or process where a wave, such as light or sound, bounces back from a surface instead of passing through
反射, 映像
the strength of a moving object determined by multiplying how heavy it is by how fast it is going
动量, 势头
the tendency of an object to resist changes in its state of motion, whether at rest or in uniform motion, and to remain in its current state unless acted upon by an external force
惯性
a small semiconductor device, used in television and radio sets, able to amplify or rectify an electric current
晶体管
an electronic device with two terminals, typically allowing the flow of current in one direction only
二极管
an electronic component that stores energy in a magnetic field when an electric current flows through it; typically consists of a coil of wire
电感, 线圈
the study of the behavior of air as it interacts with solid objects, particularly the flow of air around and through objects, and the effects of this interaction on the objects
气动学
