“ultraviolet protection factor”的概念、定义、翻译、参考文献-科学参考

单词	ultraviolet protection factor
释义	ultraviolet protection factor Encyclopedia 工学抗紫外整理释 ultraviolet protection factor紫外线防护指数皮肤无防护时紫外辐射平均效应与有织物防护时紫外辐射平均效应的比值。又称紫外线防护系数，简称UPF。是衡量纺织品防止紫外线对人体辐射性能的指标。
随便看	phase-shift keying modulation and demodulation phase-shift keying, PSK phase shift mask technology phase-slip center phase slowness phase space phase space density phase-space density phase-space distribution function phase space method phase space representation of quantum mechanics phase space theorem phase space theory phase-space volume phase spectrum phase-squeezed state phase stability phase stability condition phase state of hydrocarbon system phase state of multicomponent fluids phase state of one-component fluids phase state of two-component fluids phase stiffness phase structure phase subspace

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