gradational

[gre'deʃənl]

adj. 有等级的；渐次的

英文词源

gradational (adj.)

1785, from gradation + -al (1).

双语例句

1. Abrupt fluid a permeable reservoir; gradational ones indicate a low permeability with a high capillary pressure.

突变的流体界面表层储层具有很好的渗透率, 而渐变的流体界面表明储层的渗透率较差,且储层的毛细压力较高.

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