And many have to be dry-cleaned, which is impractical.
It will burn when heated to around 400 °C, which is impractical for certain uses.
However, conventional methods for determining ECSA require potentiostatic control of the cell, which is impractical in a fuel cell stack.
Galactic cosmic rays are more difficult to shield against, and with current materials, would require meters-thick shielding, which is impractical for space flight.
And the transit agency said that widening the platforms was not an option because it would require moving the tracks, which is impractical because of surrounding buildings.
When that approach is successful, she said, it often requires intensive coaching, which is impractical for medical offices to provide on a large scale.
A short-bore scanner usually offers a small sized imaging area, which is impractical for imaging some body parts, such as the torso.
She walks him right to the door of his classroom, which is impractical at most city schools, where parents are required to stop at a security desk, show identification and sign in.
In order to obtain a consumer-consistent result, all of the collected Kansei adjectives (usually hundreds) need to be evaluated by every survey participant, which is impractical in most design cases.
The reality of that life is a lot of travel, and a lot of being away, which is impractical because I have four children, so I don't want to be away that much, not the other side of the world away.
