English to Russian Tech/Engineering Aerospace / Aviation / Space decorative laminate in aircraft interior

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Помогите, пожалуйста, перевести "recess areas" в следующем контексте (Procedure, п.2):

Vacuum bagging is a technique primarily used to apply decorative laminate to contoured panels. Vacuum bagging allows decorative laminates to stretch biaxially. All processing parameters need to be analyzed and optimized depending on the type of equipment used, operator and environmental conditions through experimentation.

Equipment Description
The Heat Vacuum Applicator (HVA) consists of the following parts:


Panel Preparation
1. All damage to the panel should be repaired prior to starting the application process.
2. The substrate panel should be wiped down with a tack rag or isopropyl alcohol.
3. The back side of the decorative should be wiped with a tack rag to remove any dirt, grease, oil or other contaminants.

Procedure
1. The support fixture should be centrally positioned on the vacuum plate. It is typically constructed using a heat-resistant, two-component epoxy.
2. Vent holes must be drilled in all recess areas of the panel to ensure adequate vacuum pressure during the application process. Typically, a No. 72 (0.025”) drill bit is used to provide adequate vacuum pressure, but not visible after application.
3. It is recommended that a primer adhesive be applied to all recesses on the panel. A common primer used is Bostik 7132 with Boscodur #24T curing additive. This adhesive can be thinned by using a solvent such as MEK to aid in the application, as well as shorten the drying time. It is important that the primer adhesive is completely dry prior to applying the decorative material. Please follow all manufacturer instructions when using a primer adhesive.
4. The panel should be placed in the support fixture.