The phrase "arm descending" is correct and usable in written English.
It can be used in contexts related to movement, anatomy, or actions involving the arm, such as in descriptions of physical activities or gestures.
Example: "As she reached for the book on the top shelf, her arm descending slowly, she felt a sense of accomplishment."
Alternatives: "arm lowering" or "arm dropping".
The speed of arm movement was guided by a metronome, with 4-second arm ascending and 4-second arm descending.
The ICC values for the EMG measurement of SCM and UT muscles were generally between 0.70 and 0.94, except 0.55 for left UT muscle during 90-60 degrees of arm descending.
The intra-rater between session measurement repeatability, represented by intraclass correlation coefficient (ICC3,3), for the scapular kinematics was between 0.68 and 0.91, except 0.56 for scapular posterior tilt at 30 degrees of arm descending.
A robot arm descended, suctioned up glycerides on a wooden stick, then released the treasure into the dispensing slot of the machine.
In the test, a robotic arm descended onto the chip, carrying a slate of 1,500 microscopic reservoirs holding antibodies known to bind to cytokines.
Bach's Violin Concerto in A minor, (conducted here by Joseph E. Fields with Deborah Wong as the violin soloist), has impelled him into formal patterns studded with occasional pelvis swivels, limp arms descending from rotating shoulders and wiggles in plié.
Dozens of men from neighboring states, many of whom were armed, descended on Bunkerville and set up military-style camps to stop the government.
The first is the one by which Aeneas armed with a golden branch, descended into Pluto's region in search of his father.
One by one a number of the cores begin to light up, before a robotic arm descends and extinguishes the candle on the cake, plunging the room into darkness.
With one hand on Salty's harness and the other on a friend's arm, Mr. Rivera descended into an unknown world filled with acrid smoke and the sickening smell of jet fuel.
The descending arm of the dependence – a decreased effect when the GAG concentration increases – could originate from the ability of the GAG molecules to sequester protein molecules at different and distant sites, hindering their effective interaction and aggregation.
