Angle flange Standard. Flat flange: Specify hole pat-tern. If no drawing provided, flange will be blank.

角法兰标准。平板法兰：指定孔模。如果没有提供的图纸，法兰将为空白。

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Through the comparision between the blank and the sulfur dioxide standard solution, the way to make the sulfur dioxide quality control map is pointed out in the analysis of sulfur dioxide.

通过对全程序空白与已知浓度二氧化硫标准溶液的对照分析，提出了大气二氧化硫分析中质控图的做法。

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The method of standard addition is employed in the blank and the sample solutions with addition of releasing agents for determining trace amounts of calcium in steel.

采用混合释放剂，及空白与试液都以标准加入法测定、扣除空白值的方法测定钢中微量钙。

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The early versions of the manuscript contained a blank table entitled "CV events"--which is standard jargon for cardiovascular events.

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