Conclusion: Proper selection of the technique series and directed observations of pathological changes may help to understand and analyse the whole picture of focus to provide direct and rel...

结论：恰当的选择多平面重建技术系列，有针对性的对病变进行观察，有助于全面理解和分析病灶的全貌，为临床提供更直观可靠的信息。

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This text is chiefly directed against the selection of variable frequency motor and inverter in the lathe numerical control rebuilding, and the lectotype of converter is analyzed.

本文主要针对车床数控化改造中变频电动机的选择、频器的选型进行分析。

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Through the Presidential Memorandum, the President directed agencies to expedite environmental reviews and permit decisions for a selection of high priority infrastructure projects that will create a significant number of jobs, have already identified necessary funding, and where the significant steps remaining before construction are within the control and jurisdiction of the federal government and can be completed within 18 months.

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