Through comprehensive analysis and discussion, the process of briquetting-smelting by closed-top blast furnace for copper smelting is selected.

通过综合分析与论证，选择了压团—炼铜密闭鼓风炉熔炼工艺。

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A closed system would be, for instance, a glass of ice water with an ice cube in it, with the lid on top.

一个封闭系统可以是，比如说，一杯放了一个冰块的冰水，顶上加了盖子。

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Usually at the beginning of school, the noise of desks being opened and closed, and lessons repeated at the top of the children "s voices could be heard out in the street."

平时，刚开始上课的时候，在街上就能听到课桌开开关关的乒乓声和孩子们一遍遍高声念课文的读书声。

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The budget process was criticized for continuing Albany's tradition of closed-door negotiations among top leaders with little if any real role for rank-and-file lawmakers, who under a budget reform law were supposed to hash out spending agreements in public.

WSJ: Assembly gives final OK of $135B NY state budget

"The point about Shepton Mallet - along with with Kingston prison at Portsmouth, which is one of the others that is being closed - is they were the top two performing prisons in the country according to the last round of HMI (Her Majesty's Inspectorate of Prisons) inspections in 2010, " he said.

BBC: Shepton Mallet prison closure marked with special service

Those trying to manipulate the tax code from the top-down behind closed doors are no longer at a competitive advantage.

FORBES: On Tax Day, A Moral Argument In Favor Of Tax Reform