The phrase "a second reduction" is correct and usable in written English.
It can be used in contexts where multiple reductions or decreases are being discussed, such as in finance, manufacturing, or scientific processes.
Example: "After the initial cut in budget, the committee decided to implement a second reduction to further manage expenses."
Alternatives: "a further reduction" or "an additional reduction".
The final procedure that Ousterhout performed before retiring was a second reduction of her Adam's apple.
A second reduction step was then conducted and the generated Hg vapor transported to the Au Pt trap, followed by thermal release of Hg0 and atomic absorption measurement.
Royal Dutch/Shell Group made a second reduction to its proven reserves of oil and natural gas on Thursday and said that it would postpone its annual report and shareholder meeting by eight weeks or more, surprising investors.
A second reduction step characteristic of peroxide ions was observed in moderately basic and in basic media; oxide ions are responsible of the associated oxidation current.
In [66] β-hydroxybutyryl-S-ACP is dehydrated (i.e., one molecule of water is removed), in a reaction catalyzed by enoyl-ACP-hydrase, and then undergoes a second reduction [67], in which reduced NADP+ again acts as the electron donor.
In 1 M chromate solution, when the anodic potential exceeds about 0.64 V she), where silver dissolution would have occurred in the absence of any chromate, the silver chromate layer continues to thicken, and a second reduction peak is observed.
"And that's with a third reduction for students.
A third reduction step occurs with Ep = −2.40 V, at v = 50 mV −1.
For experiments with a glassy carbon electrode, a third reduction process that yield the species [Fe0 terpy −)2] is detected.
A first reduction step that should be attributed to superoxide ions was observed in moderately acidic and in moderately basic media.
Considering this interference or noise as independent from the signal leads to a first reduction in the capacity of system (8) w.r.t. the true system (7).
