formations

Clouds are formations of condensed water vapor.

云是水汽凝聚而成.

Solid wastes may be deposited in or adjacent geologic formations.

固体废物可以被存放在地质形成物中或其附近.

The role of vegetation in outlining formations is often of great help.

在圈定地层过程中,植被往往具有很大的作用.

Both formations provide instructive early examples of integration.

两者的成立提供了一体化的有益的先例.

A line of springs is found frequently at the contact of two formations.

在两个地层接触处常会有一排泉出现.

Formations are often divided into subordinate community types characterized by their dominant species.

群系可以按其优势物种的特征划分为一些次级的群落类型.

The rock formations break with cracks into new positions.

岩层产生裂缝而破裂移位.

This requires evaluating water-bearing formations in their operation as filer plants.

这就要求评价含水层作为过滤装置的运用.

Drag bits are used most commonly in soft formations.

在松软岩层中最常用的是钢砂钻头.

Clouds are formations of condensed water vapour.

云是由凝聚的水蒸气构成的.

The residual porosity indicates the compaction state of the formations.

而剩余孔隙度又反映了地层的压实状态.

The stratigraphic column in this district includes all the Paleozoic formations.

这个地区的地层柱包括全部古生代岩系.

Enormous cloud formations formed a purple mass.

巨大的云层形成紫色云团。

In the western provinces there are different geographic formations.

在西部各省有不同的地理结构.

Both clay and sandstone are unstable rock formations.

黏土和砂岩都是不牢固的岩石构造。