| 释义 |
DictionarySeemasmilliampere-second
milliampere-second[¦mil·ē′am‚pir ′sek·ənd] (nucleonics) A unit of radiation dose resulting from exposure to x-rays, equal to the dose produced by an electron beam, carrying a current of 1 milliampere, bombarding the target of an x-ray tube for 1 second. Abbreviated mA · s. milliampere-second
milliampere-second a unit of radiographic exposure equal to the product of the milliamperage and the exposure time in seconds. Abbreviated mAs.mil·li·am·pere-sec·ond (mA-s) (mil'i-am'pēr-sek'ŏnd) A radiologic unit denoting the product of the number of electrons applied to the cathode of the x-ray tube multiplied by the exposure time in seconds; it directly determines the amount of x-ray energy produced.
Synonym(s): milliampere-impulse. |