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词汇 protection factor
释义

Definition of protection factor in English:

protection factor

noun
  • A measure of the extent to which something affords protection against the harmful effects of a particular phenomenon, based on a ratio of the effects experienced with and without protection; (sometimes) specifically = "sun protection factor".

Origin

1950s; earliest use found in Proceedings of the National Academy of Sciences of the United States of America.

Definition of protection factor in US English:

protection factor

noun
  • A measure of the extent to which something affords protection against the harmful effects of a particular phenomenon, based on a ratio of the effects experienced with and without protection; (sometimes) specifically = "sun protection factor".

Origin

1950s; earliest use found in Proceedings of the National Academy of Sciences of the United States of America.

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