还有部分管线由于腐蚀结垢，沿程阻力增大。
Erosion and scale deposit in partial pipelines made more on-way resistance.
气化原料中粉末过多，料层阻力增大，透气性变坏。
Gasification materials of powder is overmuch, material layer resistance increases, permeability worse.
急性或慢性的低氧都能使肺血管收缩，血流阻力增大。
Both acute or chronic hypoxia can cause vasoconstriction and vasoconstriction increase.
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