云量：在晴朗无云的天空，紫外线辐射水平最高。但是，即使有云层，紫外线辐射水平也可以很高。
Cloud cover: UV radiation levels are highest under cloudless skies but even with cloud cover, they can be high.
一项研究表明，在葡萄中发现的化合物能保护皮肤细胞，防止太阳紫外线的辐射，而紫外线正是诱发皮肤癌的首要环境因素。
A study has shown that compounds found in the fruit protect cells from the ultraviolet radiation emitted by the sun - the leading environmental cause of skin cancer.
阳光下活动减少意味着暴露于紫外线辐射的时间缩短，而紫外线辐射会生成自由基，对机体造成损害并加速组织衰老。
Reducing the time spent in sunlight helps minimise exposure to UV radiation, which creates free radicals known to damage and age tissues prematurely.
紫外线成像显示出的绿色漩涡以及可见光形成的图像揭示了氢和硫磺气体的存在，它们受发自四边形的强紫外线的辐射而变热并形成等离子体。
Swirls of green in Hubble's ultraviolet and visible-light view reveal hydrogen and sulfur gas that have been heated and ionized by intense ultraviolet radiation from the Trapezium's stars.
汉森的研究小组发现当皮肤处在紫外线辐射之下，三种广泛用于防晒产品中的紫外线过滤成分也会生成活性氧簇ros。
Hanson's research team found that three UV filters widely used in sunscreens generate ROS when skin is exposed to UV radiation.
加州大学河滨分校的科学家已经发现防晒霜中能阻挡紫外线辐射的分子时间一长就会渗透到皮肤里，使体表更容易受紫外线攻击。
Scientists at the University of California at Riverside have found that molecules(6) that block UV radiation in sunscreen can, over time, penetrate(7) into the skin, leaving the outer body vulnerable.
找一副能阻挡99- 100%的紫外线a辐射和紫外线B辐射的太阳眼镜。
它们都可以帮助阻止紫外线辐射，从而防止植物受到紫外线的伤害DNA发生突变。
They help block ultraviolet radiation, which can mutate plant DNA and damage the photosynthesis that allows a plant to make its food.
织物紫外线透过率测试仪是衡量织物抗紫外线能力的仪器，氘灯作为优选的紫外光源，其辐射强度的稳定密切关系到测量的精度和一致性。
The deuterium lamp is often used as ultraviolet ray lamp in UV measuring instrument, the measuring accuracy of the instrument has close correlation with the stability of radiation energy.
将表盘置于紫外线投射器下72小时，模拟相当于365天的日光辐射量的照射，以检测表盘颜色抗紫外线的阻力。
The resistance of the color on dials to ultraviolet rays is tested by placing them under a projector which simulates a 365-day exposure to sunlight within just 72 hours.
紫外线辐射对人体有一定危害。介绍了纺织品紫外线防护性能的测试方法和测试中应注意的问题。
Ultraviolet radiation is harmful to health. This article introduces the testing methods of textile ultraviolet protection and the attentive problems in testing.
研究人员评论说，紫外线辐射(紫外线辐射)，在澳大利亚是这样，它即使在冬季，其水平的紫外线辐射超过欧洲国家在今年夏天。
Researchers commented that ultra violet radiation (UVR) in Australia is such that it even in winter its level of UVR exceed those of European countries in the summer.
研究了紫外线辐射对聚酯纤维的影响以及消光剂、纳米紫外线屏蔽剂的稳定作用。
The effect of UV-radiation on PET and the stabilizing role of dulling agents and UV shield agents were investigated.
探讨了织物防紫外线辐射机理，织物的纤维种类、组织结构、色泽深浅及后整理与防紫外线能力的关系。
The effect of fibre kinds, fabric texture, the depth of shade and after treatment on protection from UVR were researched.
紫外线辐射引起的损害，在细胞水平上-日光浴的一个源泉都长波紫外线和中波紫外线。
UVR causes damage at cellular level - solaria are a source of both UVA and UVB.
紫外线的抑制剂在防止漆面褪色时，是另外一种可以防止紫外线辐射的添加剂。
UV inhibitors are another clear coat additive that helps prevent the sun's ultra violet rays from fading the color coat under the clear coat.
紫外线稳定剂：虽然大量的太阳高能辐射已被大气层所吸收，然而一些在280-400nm范围内的射线（紫外线）仍能达到地球表面。
Ultraviolet Stabilizers: While much of the sun's high-energy radiation is absorbed by the atmosphere, some radiation in the 280 to 400 nm (ultraviolet) range reaches the earth's surface.
紫外线稳定剂：虽然大量的太阳高能辐射已被大气层所吸收，然而一些在280-400nm范围内的射线（紫外线）仍能达到地球表面。
Ultraviolet Stabilizers: While much of the sun's high-energy radiation is absorbed by the atmosphere, some radiation in the 280 to 400 nm (ultraviolet) range reaches the earth's surface.
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