The phrase "a specific key" is correct and usable in written English.
You can use it when referring to a particular key that is distinct from others, often in contexts like music, coding, or security.
Example: "To unlock the door, you need to use a specific key that matches the lock."
Alternatives: "a particular key" or "a designated key".
Receptors are folded proteins in the body to which small molecules or short peptides bind specifically, much like a specific key fits in a lock.
You can bind the panic button to a specific key should you prefer.
Parents choose which of the restrictions to activate, and they take effect whenever a specific key is used in the ignition.
Until that period all of Schoenberg's works had been strictly tonal; that is, each of them had been in a specific key, centred upon a specific tone.
A specific key performance indicator (KPI) was used for the quantitative assessment of fireproofing effectiveness.
Before sending the message, the transmitter of information should encrypt the information by a specific key.
Because there are many frames already in a single audio clip, a specific key-frame extraction method, proposed in [36], is applied to reduce the most redundant frames.
When the total amount of messages in a queue (the gross length of all messages) for a specific key-tuple exceeds a set threshold (qthresh) then the whole queue will be serialized and transmitted to the recipient (Figure 1(d)).
Most doors have locks that require a very specific key to open them.
The process worked toward the identification of a list of specific key lessons for each event.
What lends a sense of unity to the large variety of his writings devoted to so many different domains of knowledge, is his consistency in articulating questions, in applying a specific viewpoint and perspective, and a recurring use of specific key concepts and their concomitant terminology.
