The phrase "are commonly needed" is correct and usable in written English.
It can be used when discussing items, skills, or resources that are frequently required or sought after in a particular context.
Example: "In the field of software development, certain programming languages are commonly needed to complete various projects."
Alternatives: "are often required" or "are frequently necessary".
Martial law and paramilitary troops are commonly needed to restore order when the police lose control.
Lightweight and high strength concrete are commonly needed for a variety of structural applications.
In this paper, we examine the use of internet/intranet-based methods for providing the tools that are commonly needed by engineers in their daily work.
Groundwater systems are intrinsically heterogeneous with dynamic temporal-spatial patterns, which cause great difficulty in quantifying their complex processes, while reliable predictions of regional groundwater levels are commonly needed for managing water resources to ensure proper service of water demands within a region.
The synthesis underwent a liquid-solid reaction at 1450 ± 50 °C for 6 8 min, which is a noticeable improvement when compared to industrial processes, where a heating time of 30 h and temperatures of 2200 2400 °C are commonly needed.
In modeling applications, some simplifications are commonly needed.
Objective: Mebendazole is an anthelmintic that is commonly needed in women of reproductive age.
Seagate, for instance, can transfer some products into manufacturing by moving only a few development engineers to the factory temporarily; five years ago, 20 or more were commonly needed.
In this case, the initial filament formation of a pristine device depends on a few switching cycles rather than the formation voltage, which is commonly needed for a ReRAM device.
To facilitate the data processing and mining, the original dataset is commonly needed to be transformed into a reduced-dimension matrix [ 3, 4].
