短语词组短语effluent lava flow 侧岩流;侧熔岩流composite lava flow 复合熔岩流lava flow plateau 溶岩高原rhyolitic lava flow 流纹岩的熔岩流lava flow unit 熔岩流单元shape of lava flow 熔岩流形态flow lava 流状熔岩 返回 lava flow