紫外线

B. The UVB is the letters that caused sunburn while the UVA is more associated with deeper penetrating radiation.

在紫外线的信件，造成晒伤的紫外线，而更深层渗透与辐射。

This means protection not only against sunburns from UVB rays, but also against the long term skin damage that is associated with UVA rays.

这意味著，保护不仅是对紫外线灼伤从射线，而且也对长期皮肤损伤是与长波紫外线照射。

This means protection not only against sunburns from UVB rays, but also against the long term skin damage that is associated with UVA rays.

这意味着，保护不仅是对紫外线灼伤从射线，而且也对长期皮肤损伤是与长波紫外线照射。

Cancer is uv's final result.shortwave radiant energy,especially from the uv b band,breaks the strandsof dna.enzymeswork constantly trearrange the dna into proper sequence.but with repeated uv exposure,the repair process may even-tually break down.then the mutantdna may produce a colony of cancer cells.but skin cancer may be avoided with a good dose of common sense.people with fair skin and blue eyes who burn easily stand the highest risk.special danger spots are the parts of the body most constantly exposed to the sun,such as the cheeks,nose,lower lip and the ears.people who have already developed precancerouslesionsor had one skin-cancer growth stand a greatly increased chance of developing others.

紫外线伤害的最终结果就是诱发癌症。短波辐射能量，特别是来自uv-b波段的辐射能量会破坏dna链。本来，酶能够按照适当的顺序来重新安排这些被打乱秩序的dna，但是持续暴露于紫外线下会让这一修复过程崩溃。到那时，变异的dna就会制造出大量的癌细胞。其实，只要运用一些常识。我们就能预防皮肤癌。浅肤色、蓝眼睛的人会轻易就被晒黑，因此他们患皮肤癌的风险就高。诸如脸颊、鼻子、下嘴唇和耳朵等长期暴露在阳光下的部位是皮肤癌的高发区域。那些已经受到癌症前期伤害或者是已经患过一次皮肤癌的人，极有可能再次患上皮肤癌。

In order to observe the efficacy of routine monitoring method and ultraviolet photometric detecting device in detecting radiation intensity of ultraviolet lamp ,comparison of detection was carried out in clinical application.

为观察常规监测法与紫外线强度检测装置对紫外线灯辐照强度检测中的效果，在临床实际应用中进行了检测比较。

The influences of environmental factors on the abiotic methylation were studied. The biggest production of methylmercury was found after 2 days of incubation in presence of FA. The rate of production of methylmercury depends upon temperature. In presence of FA from sediment, the biggest production of methylmercury was found under 40℃. In presence of FA from soil, production rate increases with temperature. The biggest production of methylmercury was found when solution pH was 2 and 4 in presence of FA from sediment and soil, respectively. Increase in concentrations of inorganic mercury and FA solution causes an increase in the production of methylmercury. Under irradiation with ultraviolet ray, blacklight lamp as well as natural light, methylation is stimulated, especial for irradiation of ultraviolet light.

环境条件对汞甲基化作用的影响研究得出，在底泥和土壤FA体系中甲基汞产量均在反应2天后达到最大值；在底泥FA体系中汞的甲基化在反应温度为40℃时产量最大，而在土壤FA体系中，甲基汞产量在10～60℃之间随反应温度升高而增加；底泥和土壤FA体系中汞的甲基化分别在pH值为2和4时最大；甲基汞产量均随无机汞浓度和腐殖质浓度的增加而增加；紫外线、黑光灯和自然光照射都可促进甲基汞的生成，紫外线的作用尤其明显。

On this basis, chosing 15w germicidal lamp with radiation centred at 253. 7nm or 15w blacklight fluorescent lamp with radiation centred at 365nm as the light source respectively, the destruction effects of trace impurities in water by photocatalytic oxidation method using TiO〓 as an immobile phase have been investigated, and the effects are contrasted with photolysis. The investigation is mounted into Phenol aqueous solution, Hydroquinone and Humic Acid aqueous solutions、three representative halohydrocarbons coexisting in main water、the comprehensive index removal of varied trace organic pollutants in main water、the removal of residual chlorine and the disinfecting action, etc..

在此基础上，选择主波长253.7nm的紫外线杀茵灯或主波长365nm的蓝黑管紫外线荧光灯作为光源，研究了TiO〓膜固定相光催化氧化法去除水中微污染物的效果，包括苯酚水溶液、对苯二酚水溶液和腐植酸水溶液的光催化氧化以及自来水中共存的三种典型的氯代烃水溶液三氯甲烷、四氯化碳和四氯乙烯的混合光催化氧化、自来水中有机物总体去除效果以及光催化去除自来水中余氯的作用和光催化的消毒作用等，并进行了光解对比实验。

Some companies sell U test strips and U dosimeters, which you attach to your skin.

一些公司出售可以贴在皮肤上的紫外线测试带和紫外线测试仪。

UV filter factor,resist UV radiation with combined function of isolation and sunscreen.

紫外线过滤因子，抗紫外线辐射，隔离防晒一步到位。

Adopting compound techniques of inorganic nanometer, sol-gel techniques and ultraviolet absorbers are used to obtain new protective materials of hydroxybenoic ketone, benzotriazole and polyvinyl alcohol for the protection of historical relics .

采用无机纳米复合技术，利用溶胶-凝胶方法的分配交联和紫外线吸收剂的添加等工艺手段，筛选出适于文物保护环境的防紫外线照射，又不影响文物展示效果的羟基苯酮类、苯并三唑类及能有效消除弦光，又不影响观赏效果的聚乙烯醇类新型防护材料，以便用以不同环境下的文物保护工作。

The somatic cell count of goat milk is higher than that of cow and sheep milk due to its apocrine secretory system.

山羊奶特殊的顶浆分泌机制使正常山羊奶的体细胞数要高于正常牛奶和绵羊奶。

Third, based on the example of over proof on-load loss in 180MVA/220kV power transformer, the eddy loss in winding is analyzed with the leakage flux element software. Some conclusions with practical use are given. In order to reduce the load loss, primarily we should reduce radial leakage flux of transformer possibily.

运用漏磁场分析软件，以180MVA/220kV电力变压器负载损耗超标为例，进行详细分析，提出有工程实用价值的结论：降低变压器负载损耗，从根本上应尽可能减少变压器辐向漏磁。