Base:transparent round or square glass base ; Or Iron base plated .

底座：玻璃底座或金属镀铬底座，但是报价不含底座。

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The effect of the amount of copper to iron base anti friction sintered materials were studied.

研究了铜含量对铁基减摩材料组织性能的影响。

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There are difference of density and hardness in iron base bushings with thin walls by single- and double-pressing process along their longitudinal direction.

铁基薄壁衬套采用单向、双向压制方法，都存在着零件的密度和硬度沿高度方向分布不均匀的情况。

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Each dot represents either a gold and precious metals project or a base metals and iron ore project.

FORBES: Gold Miners Can Do Much Better Than Price Of Gold

Meanwhile, the profits of publicly traded companies in base metals such as copper, aluminum iron and nickel are up 6%, on average.

FORBES: Forget Gold, Buy Copper

Investors should expect depressed results, mostly impacted by lower iron ore prices and a lack of contribution from its base metal division, which should remain in the red.

FORBES: For Brazil's Vale, A Case Of Lowered Expectations