light units meaning in English

灯光设备
光亮度单位

Aerospace ; anti - collision beacon light units
航空航天.防撞信号灯装置
Self - contained portable emergency lighting units . requirements
应急用手提式独立照明装置.要求
Portable electric lighting units for use in hazardous classified locations
危险场所用便携式电气照明设备
Sealed lighting units for construction , industrial , and forest machinery
用于建筑工业和林业机械的密封照明装置
Portable electric lighting units for use in hazardous classified locations
危险分级的场所使用的便携式电照明设备

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