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

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Помогите, пожалуйста, перевести to telegraph through в следующем контексте:


Depending on the contour and type of panel (composite or aluminum), the minimum amount of vacuum that will ensure contact of the decorative to the substrate and will yield an acceptable adhesion level without allowing the honeycomb core to telegraph should be used. Typically, only 8- 10” Hg of vacuum pressure can be used on composite honeycomb panels.

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Panels with recess areas require vent holes to be drilled. Make sure all vent holes are open to ensure maximum vacuum pressure. A No. 72 (0.0250” or 0.635mm) drill bit provides a hole which is large enough to evacuate air, but small enough not to telegraph through the decorative.