'internal entrance' is a correct and usable phrase in written English.
You can use it when referring to an entrance that is inside a building or area, as opposed to an entrance located outdoors. For example, "Please use the internal entrance to enter the building."
Several internal entrances at the Citigroup Building, 54th Street and Lexington Avenue, to be shut; stores accessible only from the street.
Arenas located in high traffic areas with internal entrances on game day and external entrances otherwise would profit and offer a great sponsorship opportunity at a fair price for the rights.
Price: Starting at $2,830, double occupancy (single supplement $500 ,plus taxes of $95), including accommodations, internal transportation, entrance fees and most meals, but not international airfare, taxes ($451) or tips.
All those wishing to be admitted now take the schools own internal 11+ entrance examination which tests English, mathematics and verbal reasoning and attend an interview with two members of staff.
We have recently demonstrated that the 5′-UTR of the human PML mRNA harbors an internal ribosome entrance site (IRES) that can be activated in response to TNFα.
The MIGR/hES contained BM40 signal peptide and hES cDNA, followed by internal ribosome re-entrance site (IRES) and green fluorescent protein (GFP) cDNA.
It will be for about four weeks and the £10,000 cost will cover a variety of hotel stays, local tours, entrance fees, internal travel, etc.
The internal stonework of the entrance is late 14th or early 15th century and is intricately carved with branches, vines, acorns and oak leaves.
Here, we report that FhuA ΔC/Δ4L features an approximate conical internal geometry with the cis entrance smaller than the trans entrance, in accord with the asymmetric nature of the crystal structure of the wild-type FhuA protein.
The survey suggests that the henge was on the same alignment as Stonehenge, and comprised a segmented ditch with north-east and south-west entrances, enclosing internal pits up to a metre in diameter believed to have held massive timbers.
