毫弧度，英文缩写mrad，角度单位，一般用作空间分辨率（IFOV）单位，1mrad=0.001弧度=0.0575 °。
那场9.1级的地震使地球自转轴心线发生2.3毫弧度的偏移，并将一天的时间缩短6.8毫秒。
That 9.1 magnitude quake shifted the Earth's axis by 2.3 milliarcseconds and shortened a day by 6.8 microseconds.
实验结果表明对于高增益的准分子激光，采用部份透射镜作耦合输出的混合型非稳腔可以使准分子激光的发散角减小到毫弧度量级。
The experimental results showed that good beam quality was obtained with a hybrid unstable resonator in which useful output energy was obtained by transmission through a partially transparent mirror.
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