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某宣贯教材中有这样一段叙述:“以伦琴为单位的照射量和用拉德(rad)为单位的软组织中吸收剂量,在带电粒子平衡条件下数值上是近似相等的。但是,当采用国际单位制(SI)时,用库仑/千克表示的照射量和以焦耳/千克为单位表示的吸收剂量数值上就不相同了。……”这一段叙述使用了2个
In a textbook of propaganda there is a passage like this: “The amount of radiation in units of roentgen and the absorbed dose in soft tissue in rad, is numerically approximately equal under charged particle equilibrium conditions. However, The amount of radiation expressed in coulombs per kilogram and the dose absorbed in joules per kilogram is not the same for the International System of Units (SI) ... ”This paragraph describes the use of two