单词	r空间
释义
随便看	principal ultrafilter principal value interval of inverse trigonometric function principal value of arguments of complex numbers principal value of inverse trigonometric function principal value of the logarithmic function principal vector of force system principal vibration principal vibration principle congruence principle ideal of a lattice principle left projective semigroup principle of accumulation for the sequence of generalized analytic functions principle of addition or subtraction equilibrium force system principle of analytic continuation principle of bounded rationality principle of comprehension principle of continual extension principle of correlation choices (DC) principle of count principle of decomposition of a fraction principle of duality principle of duality principle of duality principle of entropy increase principle of entropy increasing in isolated system

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