collimate
/ˈkɒlɪmeɪt/verb
with obj.
1- make (rays of light or particles) accurately parallel使（光线, 粒子线）平行：
as adj. collimated a collimated electron beam.一条平行电子束。
1.1
- accurately set the alignment of (an optical or other system)校准（光学系统或其他系统）。
派生词
collimation
noun词源
mid 19th cent.: from Latin collimare, an erroneous reading (in some editions of Cicero) of collineare 'align or aim', from col- 'together with' + linea 'line'.