roentgen是什么意思_roentgen怎么读_音标'rɜ:ntjən

roentgen是什么意思音标:英 ['rɜ:ntjən]美 ['rentjən]

n. 伦琴射线, X射线
[化] 伦琴

n. a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air
n. German physicist who discovered x-rays and developed roentgenography (1845-1923)

roentgen的用法和例句：

1.If we can't cover it, that's 12,000 roentgen.

如果不用石棺覆盖 那就是一万两千伦琴

2.It only goes to 200 roentgen, but it's better than the all ones.

它最大测量值只有二百伦琴 但总比小那个的强