Jack8rkin
Member
- Joined
- Feb 11, 2010
- Member Type
- Interested in Language
- Native Language
- Russian
- Home Country
- Russian Federation
- Current Location
- Russian Federation
Hello everyone,
Could you please explain why the indefinite article is used with uncountalbe nouns in of-phrases like:
at a pressure of 50 MPa
at a power of 50 MW
at a temperature of 32 F
at a voltage of 440 V
What's the grammar behind this?
Is it at all correct?
Could you please explain why the indefinite article is used with uncountalbe nouns in of-phrases like:
at a pressure of 50 MPa
at a power of 50 MW
at a temperature of 32 F
at a voltage of 440 V
What's the grammar behind this?
Is it at all correct?