照度圈的英文

• cirvcle of illumination

• 照度:    illuminance; illuminancy; il ...
• 圈:    circle; ring
• 照度:    [物理学] illuminance; illuminancy; illumination; intensity of illumination; laminous flux density◇照度测定 illumination photometry; 照度分配图 isolux diagram; 照度计 illuminometer; luxmeter; lux gauge; lightmeter
• 分度圈:    graduated circle; graduated ring; index ring; limb
• 经度圈:    circle of longitude