Teeth have a hard surface layer called enamel.
牙齿有一层叫做釉质的坚硬表层。
Geologists think that this fluidized ejecta crater indicates that a layer of permafrost, or water ice, lies just a few meters under the surface.
地质学家认为，这个具有流体化喷出物的陨石坑表明，在地表下几米深处有一层永久冻土层或水冰。
Ozone forms a protective layer between 12 and 30 miles above the Earth's surface.
臭氧在距地球表面12至30英里的地方形成一个保护层。
Nevertheless, astronomers still believed that when a comet approached the Sun—where they could study it—the Sun's intense heat would remove the corrupted surface layer, exposing the interior.
尽管如此，天文学家们仍然相信，当一颗彗星接近太阳时——这是他们可以研究它的地方——太阳的高温将会移除损坏的表层，露出内部。
The nutrients are deep down in the active layer anyway, not high up near the surface, which is the part of the active layer most affected by run-off.
不管怎样，营养物质存在于活性层深处而不是在表层附近，活性层受径流影响最大的地方。
The answer may be that virtually all the water on Mars is now locked in the permafrost layer under the surface, with more contained in the planet's polar caps.
答案可能是，现在火星上几乎所有的水都被锁在地表下的永久冻土层中，更多的水被包含在这个星球的极地冰帽中。
The explosion lifted about 100 trillion tons of dust into the atmosphere, as can be determined by measuring the thickness of the sediment layer formed when this dust settled to the surface.
这次爆炸将大约100万亿吨的尘埃提升到大气中，这一数字可以通过测量这些尘埃降落到地表时所形成的沉积层的厚度来确定。
Duricrust is a hard layer on or near the surface of soil.
铝铁硅钙壳是土壤表面或其附近的一层硬物。
The connections between the spherical gaps in the sponge are then enlarged, using a technique called electropolishing to dissolve the surface layer of the metal.
通过采用一种叫电解抛光的技术来溶解金属的表层，使得海绵中球体间隙的连接被扩大了。
When impactors slammed into the surface of Phoebe, the collisions excavated fresh, bright material — probably ice — underlying the surface layer.
当高速而来的撞击者一头扎进月亮表面时，就掘出了表层以下的新鲜物质——很可能是冰。
You will also need to hide the front panel's surface layer you created previously, to be able to see the figures you going to trace.
你同样需要将你先前创建的正面的表面隐藏，以便能看到你要描绘的形状。
They are transient tangles in the sun’s magnetic field that are slightly cooler than their surroundings and so appear as dark patches in the photosphere—the surface layer of the sun.
它们是位于太阳磁场上暂时性的比周边温度偏低的混乱的一块区域，也因此看起来就像光球——太阳表层上的暗斑。
They are transient tangles in the sun's magnetic field that are slightly cooler than their surroundings and so appear as dark patches in the photosphere—the surface layer of the sun.
它们是位于太阳磁场上暂时性的比周边温度偏低的混乱的一块区域，也因此看起来就像光球——太阳表层上的暗斑。
PRK removes the thin surface layer of your cornea (epithelium). Your eye surgeon then USES a laser to flatten your cornea or make its curve steeper.
PRK是移除角膜薄的表层(上皮细胞)，然后眼科医生用激光使角膜平坦或弯曲。
This surface layer thickens at an early stage in a mouse after 8 days of development.
发育8天后，老鼠早期胚胎的，外胚层开始增厚。
All of this information gives scientists a picture of what the surface layer of dirt looks like now and whether or not it might have been a habitable area at some point in the planet's past.
所有的这些信息给科学家们展示了一幅土壤表层现在的图画，也说明了该星球在过去某一时间是否为一个适合居住的地方。
To do so, he does not cause surface layer and cement mortar is inconsistent, surface water mud too much, easy to the problem of craze.
这样做，就不致造成表面与里层砂浆配合比不一致，表面水泥浆太多，易于开裂的问题。
Bottom-up approach is in the vocabulary, syntax, meaning the surface layer of finishing material to the hearing.
自下而上的方法就是在词汇，句法，寓意层的表面对听力材料进行精加工。
Hair furcation because the surface layer (or periostracum) of hair stem has been already damaged.
头发分叉是因为毛干的表层(或角质层)已经损坏。
The smooth interior surface is achieved through mechanical polishing and generally followed by electropolishing, which removes the surface layer and its impurities.
平滑的内表面是通过取出表面层和杂质的机抛和在次之后再电抛得到的。
The effecting factors of grinding field temperature were analyzed. The law of roller surface layer 's temperature was researched.
系统分析了影响磨削区温度的因素，探讨磨削轧辊表层温度的分布规律。
Coating by physical vapour deposition (PVD), coating by chemical vapour deposition (CVD) and surface layer modification by ion implantation, all three are being tested and are partly in use.
涂层的化学气相沉积(CVD)和表面层改性的物理气相沉积(PVD)涂层的离子注入，所有三个正在受到考验，并部分使用。
As the surface layer of the culture, material culture is embodied on the spatial surface of the urban culture.
物质文化作为文化的表层，体现在城市的文化空间层面上。
As long as the mind is concentrative, the surface layer consciousness will combine with the deep consciousness, but you need to use the mind of practicing Qigong.
人只要精神专一了，表层意识就和深层意识结合起来了，但是你需要用练功的意识才行。
The lacquerware is a variety of traditional crafts with lacquer on the surface layer.
通俗的讲，漆器现在多指表面上有一层漆的各种传统工艺品。
Immediately below the oxide film and often mingled with it in an intricate way is the true surface layer of the metal.
氧化膜的下面就是真正的金属表层，氧化膜常常与金属表面层以复杂的形式混合在一起。
The portion of the current confined to the surface layer becomes negligible.
流经上部地层的那部分电流变得可以忽略不计。
At the initial stages of restoration, improvement on the soil biological properties by lichen and moss were represented mainly on surface layer soil.
在恢复初期，地衣和苔藓对土壤生物学性质的改善主要体现在土壤表层。
This paper introduces the characteristics of the technology of modified emulsified asphalt fiber coat and its use in the construction of road surface layer.
介绍了改性乳化沥青纤维封层技术特点及在路面上作为封层的施工应用。
This paper introduces the characteristics of the technology of modified emulsified asphalt fiber coat and its use in the construction of road surface layer.
介绍了改性乳化沥青纤维封层技术特点及在路面上作为封层的施工应用。
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