The phrase "application the key" is not correct in English.
Did you mean "application is the key"? If this is the case, you can use this phrase to emphasize the importance of applying knowledge or skills in a particular context.
Example: "In learning a new language, practice is essential; application is the key to fluency."
Alternatives: "implementation is crucial" or "application is essential".
Four of our five users have more than one application The key differentiator for Facebook so far has been the applications platform, where external developers have access to key sections of code so that they can build their own plug-ins for Facebook.
For instance, under mobile 3D video application, the key point in design is to optimize the video bit rate to suit for the limited network bandwidth, hence the asymmetric stereoscopic video scheme is a candidate of this kind of application.
As an example, in the case of Bowtie2, which is a memory bound application; the key optimisation consists in improving locality of the memory accesses and utilisation of shared memory bandwidth.
For over a decade, the achievement of the $1000 genome has itself been touted as the breakthrough application — the key that enables entry into the genomic era of human self-realization, when a person's identity becomes increasingly defined by their DNA code.
In all these applications, the key parameter is the information on the amount of accumulated energy in the supercapacitor [4, 5].
In clustering applications, the key issue is to decide whether two syllables are realizations of the same syllable type (and thus should be allocated to the same cluster) or if they arouse from distinct syllable types (and hence should be grouped in different clusters).
For analytical applications, the key components of the system also will include the individual programs written to perform the analysis.
Then, application of the Key Events analytical approach will be discussed along with research needs and potential implications for public health standard setting.
"Applications are the key.
I won't spoil the usage scenarios they've cooked up, but the applications of the key displays and integrated touchscreen do seem pretty diverse.
This paper presents a review of high strength steels in structural applications including the key design considerations.
