英语语法分析

Geologists think that this fluidized ejecta crater indicates that a layer of permafrost, or water ice, lies just a few meters under the surface.

地质学家认为，这个具有流体化喷出物的陨石坑表明，在地表下几米深处有一层永久冻土层或水冰。

The bubbling fluidized bed is used to produce hydrogen from biomass steam gasification.

鼓泡流化床进行生物质水蒸汽气化，制取氢气。

As opposed to gas-liquid systems, there is an interchange of gas between bubble and continuous phase in fluidized beds.

与气-液系统不同的是，在流化床中气泡和连续相之间有气体交换。