"essential strength" is a grammatically correct phrase and can be used in written English.
For example, you could use it in a sentence such as: "Yoga has proven to be an invaluable source of essential strength to both my body and mind."
Walsh never provided the essential strength in the paint, and he traded centers, including the excellent rebounder Zach Randolph.
For Zero Hedge, Syria was a special obsession, a sign of the essential strength of authoritarian regimes and the weakness of democracies.
For Zweig, withdrawal into the self wasn't necessarily an isolating pathology; it could provide essential strength and sustain one's original nature.
Orphaned at the age of seven, he was forced to grow up quickly, and bears a fierce charisma that demonstrates an essential strength of character.
Rodin's prime contribution was in bringing Western sculpture back to what always had been its essential strength, a knowledge and sumptuous rendering of the human body.
Mr. Ospel, 50, former head of Swiss Bank, took over with the goals of sharply reducing the combined bank's exposure to risk and refocusing on what seemed to be its essential strength as a Swiss bank with global reach: managing money for wealthy individuals worldwide.
But "Canada" is blessed with two essential strengths in equal measure — a mesmerizing story driven by authentic and fully realized characters, and a prose style so accomplished it is tempting to read each sentence two or three times before being pulled to the next.
Petri Nets have essential strengths in capturing a system's static structure and dynamics, its mathematical underpinning, and providing a graphical representation.
The national mythology that summons our psychic as well as physical energies to face them should champion role models from all walks of life and every corner of our country, tapping the essential strengths and comparative advantages of a diverse society bonded under the exceptional rubric of e pluribus unum.
However, glucose trend data is, in our opinion, one of the essential strengths of CGM.
The essential strengths of our study are the detailed and careful analysis of BCFS data, which describes a specific relapse pattern for every intrinsic subtype as a whole and is distinguished by the level of proliferation pathway activation in a homogeneously managed series of patients representing a full spectrum of breast cancers, which is not always available in clinical trial based samples.
