Ozone provides a natural protective filter against harmful ultra-violet rays from the sun, which can cause sunburn, cataracts and skin cancer as well as damage vegetation.
臭氧提供天然的保护，防止太阳的有害紫外线的侵害，这种紫外线会导致晒斑，白内障，皮肤癌以及危害植物。
As in pattern 3, the mashup hub can be used to transform the data (filter, restructure, or sort) and to enable access control of protective data sources.
和模式3中一样，可以使用mashuphub转换数据(过滤、重构或排序)，并支持对受保护数据源的访问控制。
Objective To evaluate the protective efficacy of protective equipment, such as gas-filtering can, high-efficiency filtering material and high-efficiency filter, against microorganism aerosol.
目的评价滤毒罐、高效滤材和高效过滤器等微生物气溶胶防护装备的防护效果。
The whole system is composed of number wave filter experiment module, protection measurement experiment module and protective component action characteristic experiment module.
系统功能由数字滤波试验，保护算法试验和保护元件动作特性试验三大块组成。
This paper discussed the necessity of oil-repellent finishing of the filter with polypropylene meltblown nonwovens for protective face mask using in pesticide spraying and carried out the finishing.
讨论了农药喷施用防护口罩过滤材料熔喷聚丙烯非织造布拒油整理的必要性，进行了过滤材料的拒油整理。
The methods of harmonic suppression were introduced, such as adopting passive power filter (PPF), active power filter (APF), hybrid filter and harmonic protective device (HPD).
介绍了谐波治理的方法，即采用无源滤波器、有源滤波器、混合型滤波器及谐波保护器，举例说明了谐波保护器的应用。
Super fine fiber have excellent filter efficiency and low resistance, it is ideal filter materials in producing medical protective mask, protective clothes and positive pressure fi…
通过实验说明了超细合成纤维滤料具有极佳的过滤效率和低阻力，是生产防SARS医用防护口罩、防护服及正压过滤器的理想滤材。
Super fine fiber have excellent filter efficiency and low resistance, it is ideal filter materials in producing medical protective mask, protective cl...
通过实验说明了超细合成纤维滤料具有极佳的过滤效率和低阻力，是生产防sars医用防护口罩、防护服及正压过滤器的理想滤材。
Through the filter protective soil tests and fissure self healing tests, the filter design standard of the wide grading anti seepage materials of Shuibuya Project is given.
通过反滤保土试验及冲刷自愈试验，给出了适合水布垭宽级配防渗料的反滤设计标准。
Objective To discuss the methods and therapeutic results of surgical thrombectomy after protective inserting TrapEase filter in acute deep vein thrombosis (DVT) of lower extremities.
目的探讨在下腔静脉滤器保护下手术取栓治疗急性下肢深静脉血栓形成的方法及疗效。
Objective To discuss the methods and therapeutic results of surgical thrombectomy after protective inserting TrapEase filter in acute deep vein thrombosis (DVT) of lower extremities.
目的探讨在下腔静脉滤器保护下手术取栓治疗急性下肢深静脉血栓形成的方法及疗效。
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