Plate movements are the surface expressions of motions in the mantle—the thick shell of rock that lies between Earth's crust and its metallic core.

板块运动是地幔运动的表面现象。地幔是位于地壳和金属内核之间的一层厚厚的岩石壳。

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The outer part of the envelope now has the form of a thick shell or dust cocoon.

现在包壳的外层部分是厚壳层或尘埃包层的形状。

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Numerical results are presented and the precision of the moderately thick shell theory is examined.

文末结合一个算例给出数字结果，并证实了中厚壳理论的精确性。

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Compared to the 2.5-inch-thin Lenovo ThinkCentre 91z, which actually makes that claim, it's 4.1-inch thick shell is chunky, though no more so than a small television.

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What makes the Commando different is its thick black plastic shell, a 3.6-inch touchscreen covered with Corning's extra-tough Gorilla Glass and a micro-USB port sealed with a rubber gasket.

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The traditional pasty contains ground or cubed beef, diced potato, turnip, salt and pepper, and little else and is baked in its hearty flour-based shell with a thick rolled edge.

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