The appropriate concentration of 38-40 Baume degrees.

合适的波美浓度是38到40度之间。

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If Baume concentration is too low, you can add high concentrations of ferric chloride solution.

如果波美浓度太低，则可加入高浓度的三氯化铁溶液。

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It's part of Baume concentration is very important in the etching, a direct impact on the speed of etching.

它的波美浓度在蚀刻环节中非常重要，直接影响到蚀刻的速度。

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Mr Baume said the government's love of launching initiatives - and the current economic crisis - meant that there was an argument for more civil servants rather than less.

BBC: Many civil servants 'deserve axe'

Lord Jones' period as a minister proved colourful and at times controversial and Jonathan Baume, general secretary of the senior civil servants' union the FDA, said he was "disappointed but not surprised" at the latest comments given the ex-minister's "traditionally maverick approach".

BBC: Many civil servants 'deserve axe'