surface layer

常见例句

There could be a small amount of sodium in the minerals in the surface layer.
他解释道，“也许在土卫二的表面存在着很小一部分的钠矿石。”
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In Triton's case, the summer sun sublimates a filmy surface layer of frozen carbon monoxide into gas.
就海卫一来说，夏季的太阳使表面上薄薄的一层冻结的一氧化碳升华为气体。
huzhangao.blog.163.com
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。

Drop several seeds over the surface of the pot and cover with a thin layer of vermiculite, a substance that can hold air, water and nutrients.
The way we did this was to coax embryonic stem cells first to develop into the surface layer.
我们是这么做的,先诱导胚胎干细胞,发育成外胚层。
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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。
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But that showmanship, the glitz and glitter, was only the very topmost surface layer of an entirely remarkable businessman.
FORBES: Apple Chief Tim Cook Passes His First Test
Greenland's surface layer vaulted into the news in summer 2012 when higher than normal temperatures caused surface melting across about 97 percent of the ice sheet.
ENGADGET: NASA's GROVER eco-rover to examine Greenland's ice sheet (video)
The effect of these strengthened winds whipping across the sea surface is to bring deeper, more carbon-rich water up from below, thus reducing the surface layer's capacity to absorb more CO2 from the air.
ECONOMIST: Climate change