Beam diameter at aperture 出光孔处光斑直径 ; 光束直径 ; 出口光斑

electron beam aperture 电子束孔径角

high-aperture beam 大孔径光束

aperture of beam 射束孔径

Large-aperture collimation beam 大口径准直光束

beam defining aperture 限定线束孔径

Beam diameter at the aperture 光斑直径

beam input aperture 输入孔径

beam-defining aperture 限束小孔