氢分子发出红外线的原因是它们吸收了恒星发出的紫外线，或者是受到了恒星喷发的炽热气体流的加热。
The molecules emit the infrared light that they have absorbed ultraviolet radiation from the star or have been heated by the wind from the star.
通过紫外线光电子光谱和光学吸收的测量，研究人员测定了纳米晶体中电子的最低激发态能级。
By using UV photoelectron spectroscopy and optical absorption measurements, the researchers determined the energy of the lowest excited electronic states in the nanocrystals.
最后一项变冷效应是由于平流层臭氧减少所致，而臭氧可抑制平流层从太阳吸收紫外线。
This last cooling effect is caused by a decline in ozone in the stratosphere which prevents it absorbing as much ultraviolet radiation from the sun above.
臭氧：臭氧吸收一些太阳紫外线辐射。
吸收性材料通常只能吸收紫外线和可见光——但这种新材料还能够吸收红外和远红外光线。
Absorbent material usually pulls in ultraviolet and visible light - but this new material also captures infrared and far infrared light.
黑素有着很重要的作用——它可以吸收紫外线，并可以像释放热量一样驱散紫外线。
Melanin has an extremely important role- it absorbs UV light and dissipates the UV rays as heat.
更多的紫外线到达平流层意味着会有更多的臭氧生成，而更多的臭氧则会导致平流层吸收更多的紫外线。
More ultraviolet light reaching the stratosphere means more ozone is formed. And more ozone leads to the stratosphere absorbing more ultraviolet light.
因此，地球大气中吸收最多紫外线的平流层也许对这一周期变化最为敏感。
The stratosphere, the part of the Earth’s atmosphere which does most to absorb UV, might thus be expected to particularly sensitive to the cycle.
因此，地球大气中吸收最多紫外线的平流层也许对这一周期变化最为敏感。
The stratosphere, the part of the Earth's atmosphere which does most to absorb UV, might thus be expected to particularly sensitive to the cycle.
它们的工作原理要么是含有能吸收紫外线的化学物质，要么是使紫外线折射或色散，避开你的身体。
They work by either chemically absorbing UV rays or deflecting and bouncing them off your body.
当然，丝绸在吸收紫外线后，自身会发生化学变化，从而使丝织品在日光的照射下，容易泛黄。
Of course, silk in absorb ultraviolet light, chemistry can itself, thus make silk under the irradiation of the sun, easy to yellow.
卤素也具有吸收紫外线和分解快这两种特性。
Halogens also have the necessary absorption in the ultraviolet and rapid dissociation.
100%循环多孔无汞耐用钢板吸收大部分紫外线，降低能量荷载以达到内部降温的目的。
Perforated 100% recyclable non - mercuric corten steel plates absorb most of the ultraviolet rays and decrease the energy load for cooling.
她说，使用含有防晒因子的防晒霜和保湿露也能减少紫外线的吸收和维生素D的合成。
She said that the use of sun creams and moisturisers with a sun protection factor also reduces UV absorption and so vitamin D production.
猝灭剂与紫外线吸收剂并用时效果更为突出。
Quenching agents could be particularly effective in combination with ultraviolet absorbers.
综述了不同种类的紫外线吸收剂，着重介绍了苯并三唑类紫外线吸收剂。
The different kinds of ultraviolet absorbers were reviewed, and the benzotriazole type UV absorbent were emphatically introduced.
如果标签上表明“紫外线吸收波长至400nm”或者“达到ANSI紫外线标准”，那么就是有效的。
If the label says "UV absorption up to 400 nm" or "Meets ANSI UV Requirements" these are effective.
与硫醚类、亚磷酸酯类等抗氧剂并用有显著协同效应，与紫外线吸收剂并用可进一步提高操作制品的耐侯性。
It has wonderful synergistic effect when blended with sulfide or phosphate antioxidants, and the weather aging resistance can be improved further when blended with ultraviolet absorbent.
这份研究报告说，在18岁前，儿童会吸收他们一生接触紫外线的80%。
The study said that 18 years ago, the children will be absorbed in their lives 80% of the UV exposure.
在平流层的臭氧是重要的，因为它吸收了一些太阳中危险的紫外线辐射。
Ozone in the stratosphere is important because it absorbs some of the Sun's dangerous ultraviolet radiation.
颜色更深或更浓的布料能更好地吸收紫外线。深蓝色系吸收紫外线能力最强，而黄色系吸收能力最弱。
Deep blue shades offered the highest absorption, while yellow shades offered the least.
当来自太阳的紫外线轰击到莴笋时，莴笋叶子就会在外层细胞创造吸收紫外线的多酚类物质。
When bombarded with ultraviolet rays from the sun, the lettuce leaf creates UV-absorbing polyphenolic compounds in its outer layer of cells.
涤纶可以更有效地吸收并反射紫外线。
涤纶可以更有效地吸收并反射紫外线。
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