Vaned diffuser plays an important role in centrifugal compressor as it can improve the performance of compressor and broaden the operating range.

离心压缩机中，叶片扩压器对提高压缩机整机性能、拓宽有效运行范围发挥着举足轻重的作用。

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Static components such as diffusers and volutes play an important role in the centrifugal compressor because they can improve the performance of the compressor and broaden the operating range.

离心压缩机中的静止元件如扩压器、蜗壳等，对提高压缩机整机性能、拓宽有效运行范围发挥着举足轻重的作用。

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Then, calculation models for each parameter in the operating range prediction model were established and analyzed.

然后建立了模型中各个参数的计算模型，并进行分析。

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It now expects fourth-quarter gross profit margin to be in the range of 30.0% to 32.0%, and operating profit margin in the range of 17.0% to 19.0%, when it releases fourth-quarter results on Jan. 22.

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As per company guidance, revenues are expected to offset 80% of cost pressures in the Sept. quarter with operating margin estimated to fall in the range of 9%-11%.

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The company also expects non-IFRS (the equivalent of non-GAAP) operating margin to be below the previously expected range of 6%-9% for the quarter.

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