The simulation results showed that the flow of gas-solid two-phase was non-uniform in axial, radial and tangential directions, and was not symmetric flow as expected, but was up in S-type form.

结果表明，提升管内气、固两相沿轴向、径向和切线方向的流动不均匀，并非完全对称流动，而以S型螺旋形上升流动。

youdao

I'm asking what's the tangential speed as it moves along the circle?

它在做圆周运动时,切向速度是多少

耶鲁公开课 - 基础物理课程节选

There's tangential irony in Lehman's demise largely tied to over-leveraging mortgage paper.

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