铸件的制作涉及到一些奇怪的老式和新式器械以及烤箱，另外还包括一台架在散落标本抽屉上的老式手工离心机(上图)，它是用来赶走铸件中的空气泡的。

The casts are made using an odd collection of old and new instruments and ovens, including an old handmade centrifuge built on stray specimen drawers (above), used to get air bubbles out of the casts.

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在对锡青铜离心轴套铸件的喇叭形气孔形貌进行分析的基础上，归纳出喇叭形气孔的形成机理。

Investigation on the loudspeaker shaped gas hole morphology in tin bronze sleeves cast by centrifugal casting have been carried out by optical and scanning electron microscope observation.

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实践证明这种立式离心铸造机能改善铸件的内在纤维组织、提高产品的质量和生产效率，降低生产成本。

The practical application proves that the vertical one can improve the interior fiber texture of castings, promote the product quality and productivity, and decrease production cost.

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