I am still confused with distributive singular/plural forms.
1. You must put a (or one) power supply to each carton box.
Can I understand that each carton box will contain one power supply in the above case?
2. You must connect a (or one) power supply to each machine.
Can I understand that each machine uses one power supply jointly?
Then can I say, "You must connect a different power supply to each machine," if each machine needs an independent power supply?
Sentence 1 and sentence 2 are similar in sentence structure. Sentence 1 suggests that there are a number of power supplies and each of them must move from one place to another. In sentence 2, however, the power supply (as a product) stays in the same place.
3. You must connect a different sensor to each circuit.
Is this sentence okay if, for example sensor 1 must connect to circuit A, sensor 2 must connect to circuit B, etc.?
Let me confirm one thing.
There are 100 staff members (staff members 1, 2, 3, etc.)
There are 100 customers (customers A, B, C, etc.)
If staff member 1 must visit customer A, staff member 2 must visit customer B, .... (but they need not visit more than one customer), can I say,
"We must send each staff member to a different customer."?