The phrase "are indispensable components of" is correct and usable in written English.
You can use it when discussing elements that are essential or necessary parts of a larger system or concept.
Example: "In a successful marketing strategy, social media and content creation are indispensable components of reaching a wider audience."
Alternatives: "are essential parts of" or "are crucial elements of".
Experimental animal models are indispensable components of preclinical sepsis research.
Rectifying elements such as diodes or transistors are indispensable components of the rectifier/voltage multiplier block, which determine operation frequency and power-conversion efficiency.
Wireless sensor networks (WSNs) are indispensable components of Internet of Things [5 7, 9 11, 15, 19, 23 25, 32, 37, 38].
Phosphors are indispensable components of white light-emitting diodes (wLEDs) devices, and their luminescence properties determine the optical quality of wLEDs in the application of lighting and displays.
Sensors are indispensable components of modern plants and processes and their reliability is vital to ensure reliable and safe operation of complex systems.
In the sales process, value propositions are indispensable components of the sales process.
Second, although party membership is a symbol of one's status in the political hierarchy, meritocratic traits are indispensable components in the recruitment of party members.
In today's photovoltaic (PV) landscape, oxide semiconductors are indispensable components in all types of commercialized and emerging thin film solar cells, widely employed as transparent electrodes and interfacial layers.
Alkaline pretreated corn stover had a xylan content of 25 28%, which implies that hemicellulases should be indispensable components in the hydrolysis of biomass pretreated under alkaline conditions.
Polarization controllers (PCs) are indispensable passive components for state of polarization (SOP) control in optical fiber communication systems.
