• 1. fluctuate e: 波动 | 使波动 | 变化 | 动摇

• 1.There exist three types of slip surface, i. e. , straight intercept type, curved fluctuate type and gradation band type.
  根据形态识别出平直截切型、弯曲起伏型、渐变条带型三种类型滑动面。
  dict.yoduao.com

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