对低锡青铜进行了吹氧精炼试验。
The tests of refining by oxygen blow were made on melting low tin bronze.
例如钢基上镀铜、镍层再镀铬、低锡青铜上镀铬、多层镍上镀铬、镍铁合金镀层上镀铬等等。
For example steel base plated copper, nickel, chromium plating, low layer again tin bronze chrome, multi-layer nickel chrome plating nickel ferroalloy, chrome, and so on.
钢背-锡青铜双金属衬套制造成本低、磨损率小、使用寿命长，可取代全青铜衬套。
Steel backed-tin bronze bi-metallic sleeve can be used to substitute all bronze sleeves due to its low manufacturing cost, better wearing quality and longer service life.
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