The phrase "and is used when" is correct and usable in written English.
It can be used to explain the context or situation in which something is applicable or relevant.
Example: "The term 'metaphor' refers to a figure of speech and is used when comparing two unlike things to highlight a similarity."
Alternatives: "and applies when" or "and is applicable in situations where".
Compounding is the practice of preparing a drug for an individual patient's needs, and is used when those needs cannot be met by a mass-produced drug.
Beckham, who was known as Posh Spice, posted a picture of an official Spice Girls photo album on Twitter, including the hashtag #TBT which stands for "Throwback Thursday" and is used when people post old photos on social media.
In contrast, an incisional biopsy involves the removal of only a portion of the lesion for pathological examination and is used when the size or location of the tumour prohibits its complete excision.
The tactic is known as pay-for-delay and is used when a generic manufacturer tries to bring its drug to market before the patent on a brand-name drug has expired.
Frenchmen like Jond have their own snow vernacular, including "béton," which means "concrete" and refers to a hard, icy course; "gros sel," which refers to snow crystals the size of cooking salt; and "savonneuse," which means "soapy" and is used when snow gleams as if it's just been washed.
This is known as pairing and is used when members have other commitments and are likely to miss a vote.
Neutral density filters decrease the intensity of the light without affecting its colour and are used when the light intensity is too great for the correct exposure.
It can be attached to a helmet and be used when biking around the city for example.
The stored collection of the new estimated values is the empirical distribution of the estimated values and was used when confidence intervals were calculated. .
The stored collection of the new estimated values is the empirical distribution of the estimated values and was used when confidence intervals were calculated.
Non-amplification methods are based on direct hybridization reactions between target DNA segments and labeled DNA/RNA probes and are used when the target is in abundance.
