| 单词 | parity |
| 释义 | parity parity1 /par"i tee/, n. 1. equality, as in amount, status, or character. 2. equivalence; correspondence; similarity; analogy. 3. Finance. a. equivalence in value in the currency of another country. b. equivalence in value at a fixed ratio between moneys of different metals. 4. Physics. a. a property of a wave function, expressed as +1 or -1 and noting the relation of the given function to the function formed when each variable is replaced by its negative, +1 indicating that the functions are identical and -1 that the second function is the negative of the first. b. Also called intrinsic parity. a number +1 or -1 assigned to each kind of elementary particle in such a way that the product of the parities of the particles in a system of particles multiplied by the parity of the wave function describing the system is unchanged when particles are created or annihilated. 5. a system of regulating prices of farm commodities, usually by government price supports, to provide farmers with the same purchasing power they had in a selected base period. 6. Computers. the condition of the number of items in a set, particularly the number of bits per byte or word, being either even or odd: used as a means for detecting certain errors. [1565-75; < LL paritas. See PAR1, -ITY] parity2 /par"i tee/, n. Obstet. 1. the condition or fact of having borne offspring. 2. para5 (def. 1). [1875-80; < L par(ere) to bring forth (cf. PARENT) + -ITY] |
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