см. тж. проверка ~ ; удерживать ~
• The principal dimensions of the arch may be dictated by the conditions at the site .
• These units will be assembled at site .
• The magnetic field was scanned with plugs in position .
• This is a method for in situ insulation.
• The units may be fitted to an existing valve in situ .
• We found a locally available supply of aggregate.
• On-the-site casting of concrete.
• An on-the-spot investigation was conducted.
• Towers are assembled on the spot by the erecting crew.
• An extensive theoretical analysis was followed by a detailed on-site measurement programme.