In addition, the chromium layer surface have an activation.

另外对铬层表面有活化作用。

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Teeth have a hard surface layer called enamel.

牙齿有一层叫做釉质的坚硬表层。

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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。

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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.

VOA: special.2009.04.21

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。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

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。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

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)

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

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