The maximum mass fraction in the species flow zone is smaller than 0.9.

从组分气流模拟结果看，焊接区组分以辅助气流为主，但其组分质量分数低于0.9。

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Annular reverse flow zone can be found too in the combustor with the flat-straight slag baffle.

简单环形挡渣板也能产生环形回流区，在旋风燃烧室设计中可取代锥形缩口挡渣板。

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Induced by the high-speed feed jet flow, the solid particles above the feed nozzle tended to flow down, and a reverse flow zone was formed along the riser wall.

受喷嘴区高速射流的影响，喷嘴上方固体颗粒呈向下流动趋势，形成一个诱导回流区域。

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More euro-zone capital will flow in then, boosting the krona's value.

FORBES: Euro Trashed

The action plan may use peak flow measurements and symptoms to categorize your child's asthma into zones, such as the green zone, yellow zone and red zone.

CNN: Childhood asthma

Large parts of the City of Ann Arbor and parts of Scio Township have now been placed in a Groundwater Use Prohibition Zone (PZ) by the court, as the plume is now being allowed to flow through the city to vent into the Huron River.

FORBES: Responsible Investing: Is Pall 'Leading' in Water Filtration? (Governor Snyder's Hometown has a 1,4 Dioxane Problem)