mache

mache读音音标

英 [\'mɑ:ʃeɪ]

美 [\'mɑʃeɪ]

mache意思解释

n.

马谢（量镭的单位，空气或液体所含氡的浓度单位）；

英英释义

Mache (symbol ME from German Mache-Einheit, plural Maches) is an obsolete unit of volumic radioactivity named for the Austrian physicist Heinrich Mache. It was defined as the quantity of radon (ignoring its daughters; in practice, mostly radon-222) per litre of air which ionises a sustained current of 0.