Coupling piece for joining two containers that are stacked one atop the other, arrangement of stacked containers, and method for joining stacked containers using coupling pieces of this type.

连接两个相互堆叠的集装箱的连接件，相互堆叠的集装箱的配置，以及使用该类型的连接件连接相互堆叠的集装箱的方法。

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This piezoelectric ceramic piece is composed of two kinds of different materials, there exits coupling question of degree of freedom, and the coupling of different physical field.

由于所研究的压电陶瓷片是由压电陶瓷层和薄铜片两种不同材料所组成，因此不仅存在自由度的耦合问题，同时还存在不同物理场的耦合问题。

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The effect of preheating, test-piece thickness and coupling agents on the electric properties and the mechanical properties of the materials have been specially studied.

试验结果表明，模压前合理的预热可以显著地提高酚醛塑料的电性能及力学性能；

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Trailers are typically attached to tractors by a "fifth wheel, " in which a coupling pin on the trailer fits into the center of a large horseshoe-shaped piece of metal.

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