For ferritic chromium steel, its thickness of layer is greater than that of austenite chromium steel.

铁素体型钢的渗层厚度明显大于奥氏体型钢。

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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。

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Five tons of soil would fill a small dump truck; if spread over an acre, it would make a layer slightly less than the thickness of a dime.

五吨的土会装满一辆小型自卸式卡车；若铺开在一英亩的土地上，它会形成不足一角硬币厚度的土层。

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Stick the part in acid, run an electric current through it and we can increase the thickness of the layer by a factor of 20-40.

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Instead, the transistor is built up as a series of layers, deposited one at a time on the chip a process that allows the thickness of each layer to be controlled very accurately.

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Once the container is spinning at the correct speed (typically a few revolutions per minute), the mercury spreads out to form a layer less than a millimetre thick, and in such a way that variations in the thickness of the mercury layer compensate for the imperfect shape of the container.

ECONOMIST: Mirror, mirror