This presents a tortuous flow path to ensure intimate contact of the impurities on the surfaces and within the pores of the carbon.

该过滤器可提供一条曲折的流路，确保对表面或以及在碳毛孔内部的杂质彻底清除。

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In the intergranular spaces of rocks, however, fluid must flow around and between grains in a tortuous path; this winding path causes a resistance to flow.

然而，在粒间孔发育的岩石中，流体必须在颗粒周围的曲折通道中流动；而这种曲折通道会对其流动产生阻力。

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Also as dendrites solidify and shrink in volume replacement of melt must flow along a tortuous path of interleaving dendrites.

此外，作为晶体固化和量的收缩，熔化物的替代品一定会沿着交错的晶体网络流过一段曲折的路程。

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