The surrounding terrain, consisting of deep fjords, mountains and a town, made it impossible to install an instrument landing system.
The industry has been the object of customer complaints because D.S.L. service is difficult and sometimes impossible to install if a client is not within about three miles of the local phone company's switching office.
A complete ultraclean LAF ventilation system is very expensive, and can sometimes be impossible to install in pre-existing premises without extensive rebuilding [3, 7].
Due to conservational, architectural or economic reasons, it is difficult or sometimes also impossible to install climate systems into historic buildings.
IPSW firmware files are now signed by Apple through their servers, so it's technically impossible to install old vulnerable versions of iOS using iTunes.
In the bus network, the setting and usage method of this TimeCode function is stipulated, and it was impossible to install the spin index pulse function of the mission network.
In the bus network, the setting and usage method of this TimeCode function is stipulated, and it was impossible to install the spin index pulse function of the mission network. .
In already constructed facilities, it would therefore be impossible to install HVAC without renovation and reconstruction.
