как это делается в случае отсутствия
• The modulator shutters are not permitted to open as wide as would be the case if the undercorrection path were nonexistent.
Источник:
Русско-английский научно-технический словарь
на Gufo.me
• The modulator shutters are not permitted to open as wide as would be the case if the undercorrection path were nonexistent.