纵队在迷宫般的巨大走廊中爬行，下方是在黄铜色天空下翻腾着的积雪化成的汹涌激流。
The columns crawl through a maze of giant corridors down which fierce snow-fed torrents foam under skies of brass.
着重研究了在黄铜基体上无氰退镍液的化学组成及退镍的电解工艺规律性。
The chemical components of solution and the electrolysis technique in order to remove Nickel from brass basis without cyanide are investigated.
提出一种在黄铜件表面获得黑色古银外观的新方法，介绍了其工艺流程和各工序配方。
A new process of obtaining black antique-silver appearance on brass substrates was presented.
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