The phrase "powerful arsenal" is correct and usable in written English.
You can use this phrase to describe a collection of weapons, resources, strategies, or methods in the hands of an individual or organization. For example, "The company has a powerful arsenal of tools that allow them to quickly respond to changes in the market."
In all three of these works, Ms. Chi displayed a keen musical intelligence and a powerful arsenal of technique.
The ability to manipulate atoms and molecules in the liquid phase provides a powerful arsenal for synthesis of tailor-designed nanomaterials using a bottom-up approach.
The 15-count indictment and Mr. Ravi's own videotaped acknowledgment of many of the facts gave the prosecutors a powerful arsenal.
But a powerful arsenal of search tools awaits those who are willing to take the time to learn how to use it.
In virtue of the rising demand for metal-free polymeric materials, organocatalytic polymerization has emerged and blossomed unprecedentedly in the past 15 years into an appealing research area and a powerful arsenal for polymer synthesis.
Polymerase chain reaction (PCR) has given scientists a powerful arsenal of molecular tools as it can be used to exponentially amplify trace amounts of DNA.
Many of Yemen's unruly tribes command powerful arsenals.
Nestled in our chairs, we watched Franklin Roosevelt deliver his powerful 1940 "Arsenal of Democracy" speech.
Putin shook hands with dozens of well-wishers in the crowd as he walked away to his next engagement, the receipt of the "nuclear suitcase" containing the codes to Russia's powerful nuclear arsenal, a symbol of presidential might.
Taken together, though, this collection of techniques and real-world examples constitutes a powerful online arsenal for companies large and small.
Putin has repeatedly reminded the U.S. and other Western states that Russia possesses a powerful nuclear arsenal and intends to defend itself at any cost.
