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Discover LudwigThe phrase "a external" is not grammatically correct in written English.
However, the phrase "an external" can be used to refer to something that is located or coming from outside of a specific place or system. Example: The company hired an external consultant to help with their marketing strategy.
Exact(38)
Table 2 presents the attenuation factor estimates from the measurement error models using Approaches A (external validation with biomarkers M/N) and B (Internal repeat measurements Q2 /Q2).
a External appearance of the brain.
a External view of the reactor.
(a) External view and (b) magnified image (×10).
Don't like that option or want something more than just a external hard drive?
a External view and b the view from the solar direction (Z).
Similar(21)
Fig. 1 a d External photographs.
"Fingerprints are like a photo, an external physical identification.
Here A is an external input.
Internal security implies also an external dimension, a defence capacity.
a PPGs form an external filter cake.
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