The floor was of smooth, white stone; the chairs, high-backed, primitive structures, painted green: one or two heavy black ones lurking in the shade.

地是平滑的白石铺砌的；椅子是高背的，老式的结构，涂着绿色；一两把笨重的黑椅子藏在暗处。

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The design of bearing flange structures has a significant effect on saving cost and lightweight of heavy load gearbox.

重载变速箱支承法兰盘的结构设计对节约成本、减小箱体整体重量有着重要的影响。

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Boilermakers fabricate, assemble, erect, test, maintain and repair boilers, vessels, tanks, towers, heat exchangers and other heavy-metal structures.

锅炉工制造，组装，架设，测试，维护和修理锅炉，容器，储罐，塔器，换热器和其他重型金属结构。

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As the baby boomers age, they will create increasingly top-heavy structures.

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Besides being deep and hot to handle, the metallic structures are dense and heavy, yet fragile, striated with fractures that the researchers feared would cause them to crumble like dry cake before they reached the surface.

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Some of the turbines, and the other structures such as the towers, can of course get quite heavy, and they move as well.

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