The phrase "may only occur" is grammatically correct and can be used in written English.
You can use it when describing a condition or limitation that restricts the occurrence of something. For example: - "In this experiment, we found that the reaction may only occur at high temperatures." - "According to the rules, this type of behavior may only occur in designated areas." - "The error may only occur when the device is low on battery." - "The event may only occur once a year, making it a highly-anticipated occasion." In all of these examples, the phrase "may only occur" conveys the idea that there is a specific circumstance or condition in which the action or event can take place.
Catalysis may only occur when the oxyanion hole is formed through substrate binding, preventing hydrolysis of the acyl-enzyme intermediate.
Final exams may only occur during the mandated five-day examination period, in accordance with Section 2.11 of the Rules and Regulations of the Faculty.
Unless natural gas prices go up, the future of new nuclear production may only occur in states, such as Georgia and North Carolina, that allow electric monopolies, said Christopher Muir, utilities analyst at S&P Global Market Intelligence.
When they return, they will find a landscape of legal battles and a federal government that has determined that marriage may only occur between a man and a woman.
Lychakov and Rebane17 estimate that serious problems in directionality may only occur where mass asymmetry between otoliths is >0.2, and only one individual (<0.1%) in this study achieved this.
As found in other Mediterranean scrubland, recruitment may only occur in years with particularly favourable weather, under disturbance regimes that increase seedling survival probability or when external dispersal agents increased seed availability in adequate places for Lavandula establishment.
"People will be buying bonds as Christmas presents," predicts Matt King, a credit strategist at Citigroup.Paradoxically, the real problem for governments may only occur if they manage to revive their economies.
The minutiae of domestic life and individual idiosyncrasy are so involving that when we discover that Julia, the central female character, sleeps in her bra because it makes her feel more supported, we find ourselves hoping for her sake that it is not wired (admittedly, this thought may only occur to bra wearers).
2) Modifications to the system may only occur at the beginning of each management period.
In the replanning problem described above, significant component shortages may only occur a couple times a year.
We will prove that the blow-up may only occur on the boundary of the domain in some cases.
