“dimensions”的概念、定义、习题解题方法及翻译-物理辞典

单词	dimensions
释义	dimensions The product or quotient of the basic physical quantities, raised to the appropriate powers, in a derived physical quantity. The basic physical quantities of a mechanical system are usually taken to be mass (M), length (L), and time (T). Using these dimensions, the derived physical quantity velocity will have the dimensions L/T and acceleration will have the dimensions L/T². As force is the product of a mass and an acceleration (see Newton's law of motion), force has the dimensions MLT-². In electrical work in SI units, current, I, can be regarded as dimensionally independent and the dimensions of other electrical units can be found from standard relationships. Charge, for example, is measured as the product of current and time. It therefore has the dimension IT. Potential difference is given by the relationship P = VI , where P is power. As power is force × distance ÷ time(MLT^-2 × L × T^-1 = ML²T³), voltage V is given by V = ML²T^-3I^-1
随便看	very high frequency very low frequency Victor Meyer's method virial equation virtual image virtual particle virtual state virtual work viscometer viscosity visible spectrum visual binary visual-display unit bel bell metal Bell's theorem bending moment Bergius, Friedrich Karl Rudolf berkelium Bernoulli theorem Bernoulli, Daniel Berzelius, Jöns Jacob Bessemer process beta decay beta particle

物理辞典收录了3346条物理词条，基本涵盖了常用物理知识及物理英语单词词组的翻译及用法，是物理学习的有利工具。