英语词汇“pack-year”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

pack-year n. Medicine a unit used to express a person's cumulative exposure to cigarette smoking, equivalent to the consumption of 20 cigarettes per day for a period of a year.

ΚΠ

1964 T. J. Hummel in Jrnl. Risk & Insurance 31 617/2 Excess mortality induced by cigarette smoking is directly related to the number of cigarettes smoked. In oversimplified terms, it may be that the excess mortality will begin to occur after the fifteenth pack-year. [Note] Packs per day multiplied by number of years of smoking.

1991 Lancet 21 Dec. 1592/1 The percentage of smokers in the chemical workers..exceeds by far the average for men in Germany... There is no information about pack-years of smoking, which is important to mortality from lung cancer.

单词	pack-year
释义	> as lemmas pack-year pack-year n. Medicine a unit used to express a person's cumulative exposure to cigarette smoking, equivalent to the consumption of 20 cigarettes per day for a period of a year. ΚΠ 1964 T. J. Hummel in Jrnl. Risk & Insurance 31 617/2 Excess mortality induced by cigarette smoking is directly related to the number of cigarettes smoked. In oversimplified terms, it may be that the excess mortality will begin to occur after the fifteenth pack-year. [Note] Packs per day multiplied by number of years of smoking. 1991 Lancet 21 Dec. 1592/1 The percentage of smokers in the chemical workers..exceeds by far the average for men in Germany... There is no information about pack-years of smoking, which is important to mortality from lung cancer. extracted from packn.¹ < as lemmas
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