The system should be regularly maintained by trained personnel of the operator or the uv lamp supplier preferably at least once every 6 months 应由系统供应商或曾受训练的人员定期检查保养，宜至少每隔六个月检查一次。
5 the system should be regularly maintained by trained personnel of the operator or the uv lamp supplier preferably at least once every 6 months 5应由系统供应商或曾受训练的人员定期检查保养，宜至少每隔六个月检查一次。
Methods of testing plastics . optical and colour properties , weathering . methods of exposure to laboratory light sources . fluorescent uv lamps 塑料试验方法.第5部分：风化条件下的光学和颜色特性. 540f方法：曝露在实验室光源下的方法.荧光紫外灯
1 the spectral power distribution of light from fluorescent uv lamps is significantly different from that produced in light and water exposure devices using other light sources 在光和水老化设备中所用的紫外荧光产生的光的光谱能量分布与别的光源有着显著差异。
As the output of uv lamp declines over time , the uv lamp should be replaced preferably at 6 to 9 months interval , before its natural burnt out time 由于紫外光灯会老化而逐渐失效，因此应定期更换紫外光灯，宜每隔六至九个月更换一次，不可等到紫外光灯自然耗尽时才更换。
" the awts ii has faster flow rate and larger filter size . in addition , the integrated monitor serves as reminder for filter and uv lamp replacement . 安利第二代净水器的出水速度更快，净水量更大；新增的电子监察显示器功能，提示更换紫外光灯和滤心，让我们用得更放心。
3 as the output of uv lamp declines over time , the uv lamp should be replaced preferably at 6 to 9 months interval , before its natural burnt out time 3由于紫外光灯会日渐老化而逐渐失效，因此应定期更换紫外光灯，宜每隔六至九个月更换一次，不可等到紫外光灯自然耗尽时才更换。
During the nylon 6 production , the small white point can be seen in chips after extracting under uv lamp sometimes , the spinnability of the chips with white point was poorer 摘要在锦纶6切片生产过程中，有时会发现萃取后的切片在伍德灯下产生反射白点，这种白点切片的可纺性较差。
If uv radiation is used to generate ozone , the uv lamp should be regularly replaced preferably at 6 to 9 months interval , but well before its natural burnt out time 假如使用紫外线辐射来产生臭氧，应定期更换所使用的紫外光灯，宜每隔六至九个月更换一次，不可等用到紫外光灯自然耗尽时才更换。
4 if uv radiation is used to generate ozone , the uv lamp should be regularly replaced preferably at 6 to 9 months interval , but well before its natural burnt out time 4假如使用紫外线辐射来产生臭氧，应定期更换所使用的紫外光灯，宜每隔六至九个月更换一次，不可等用到紫外光灯自然耗尽时才更换。
