The phrase "a coarse layer of" is correct and usable in written English.
It can be used to describe a rough or thick layer of a material or substance in various contexts, such as geology, construction, or cooking.
Example: "The cake was topped with a coarse layer of sugar, giving it a delightful crunch."
Alternatives: "a rough layer of" or "a thick layer of".
To use a combination of materials: Start with a coarse layer, like gravel, to help with drainage.
Borrowing from the field of petrology, we explored a method originally developed to describe the shape of aggregates, material used to form the base coarse layer of roads [25].
In a weak acid treatment solution, a dual-layer structure was formed: an outer coarse layer consisting of plate-like OCP crystals and an inner dense layer consisting primarily of HAp crystals.
In a weak alkali treatment solution, a dual-layer structure was also formed: an outer coarse layer consisting of rod-like HAp crystals and an inner dense layer consisting of HAp crystals.
If we merge CoreSC categories so that we consider a coarser grain layer of four categories, namely Prior (BAC), Approach (MET+MOD+EXP), Outcome (OBS+RES+CON) and Objective (MOT+GOA+HYP+OBJT) then our F-measures respectively become: BAC: 59%, Approach: 72%, Outcome: 81%, Objective: 38%.
The coarse layer is a mixture of clay, sand and rice straw, while the fine coat consists of lime, clay, sand and cotton.
The local Ba-ga soil, Ang-ba soil and loess soil were sampled and tested by XRD which revealed the main components of these soils are all quartz, calcite and albite, and are basically the same as those of coarse layer, fine layer and Ang-ba layers of the wall painting samples.
Scanning electronic micrographs of the first coarse layer (a), the second coarse layer (b), the fine layer (c) and the cross-section of sample zx1-11with a thin layer on the top of the fine coat (d).
The eigenvectors of the matrix f ̄ can be used for multivariate analysis of the coarse layer F. The image is decomposed into a sum of components from the primary to the secondary.
The first experiment consisted of LNAPL infiltration into a fine sand matrix with a coarse sand layer, and the second experiment consisted of a coarse sand matrix and a fine sand layer.
