The phrase "are not standalone" is correct and usable in written English.
It can be used to indicate that something cannot function independently and requires additional context or components to be complete.
Example: "These components are not standalone; they must be used in conjunction with the main system to operate effectively."
Alternatives: "cannot function independently" or "are not self-sufficient".
"IBM has a database, Lotus, Tivoli and middleware to draw on," says Cihra. "[HP's] OpenView is a great product, and Compaq has some fantastic clustering technology, but these are not standalone businesses.
For one thing, Nextel's industry is hard to measure on a P/E basis thanks to spotty profitability and two significant competitors Cingular and T-Mobile that are noT-Mobile thatcell comparees.
While touchscreens have been explored as a means to assist people with visual impairments in learning mathematical concepts, many devices are not standalone, were not developed with a user-centered design approach, and have not been tested with users who are visually impaired.
As our non-automated method for data discovery and WikiProteins for protein knowledge exchange illustrate, ontologies are not standalone solutions for interoperability but rather comprise a component of or input to large-scale interoperability infrastructures.
Studies were not standalone randomized controlled trials, and most evaluated patients with diabetes.
(Again, the apps aren't standalone experiences, but remote controls for watching on the browser).
As with the Echo itself, the Echo Buttons demonstrate the technology that's possible – the buttons aren't standalone devices, but connect with Echo via Bluetooth.
But the web app is not standalone: the phone must be connected to the internet or the conversation will drop out, and all of users' messages will remain on the phone.
What if mobile applications weren't standalone, isolated experiences, but could actually connect users to each other – or even to the app's developers – with a push of a button?
Whilst school-based sex education programmes are an important tool in STI prevention they are not a standalone method.
Unless used in conjunction with artificial ventilation rooms with adequate ACH rates, these are not good enough standalone measures of protection.
