名詞 roentgen:

1. a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air
   同義詞：R
2. German physicist who discovered x-rays and developed roentgenography (1845-1923)
   同義詞：Wilhelm Konrad Roentgen, Rontgen, Wilhelm Konrad Rontgen

roentgen 也作 rônt.gen

n.Abbr. R,r（名詞）縮寫 R,r
A unit of radiation exposure equal to the quantity of ionizing radiation that will produce one electrostatic unit of electricity in one cubic centimeter of dry air at 0=C and standard atmospheric pressure.
倫琴：一種輻射照射的計(jì)量單位，相當(dāng)于零攝氏度時(shí)在標(biāo)準(zhǔn)大氣壓下，一平方厘米的干燥空氣中產(chǎn)生電流的一個(gè)靜電單位的致電離輻射量

來源：
After &B{Wilhelm Konrad} Roentgen
源自 &B{威廉·康拉德} Roentgen

【引伸】
roent.gen
adj.（形容詞）