“dead space”的概念、定义、翻译、参考文献-科学参考

单词	dead space
释义	dead space [`ded ´spās] ^ANATOMY The space in the trachea, bronchi, and other air passages which contains air that does not reach the alveoli during respiration, the amount of air being about 140 milliliters. Also known as anatomical dead space. ^MEDICINE A cavity left after closure of a wound. ^PHYSIOLOGY A calculated expression of the anatomical dead space plus whatever degree of overventilation or underperfusion is present; it is alleged to reflect the relationship of ventilation to pulmonary capillary perfusion. Also known as physiological dead space. ^{THERMODYNAMICS} A space filled with gas whose temperature differs from that of the main body of gas, such as the gas in the capillary tube of a constant-volume gas thermometer.
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