см. тж. если потребуется ; по мере необходимости
• The plant permits inclusion of other elements for crushing, grinding, screening and concentration as may be required .
• This equipment could be moved elsewhere as the need arose .
• The bobbins may be put in parallel, if need be ( or should the need arise ), to increase the field strength.
• The table shaft is hollow so that if required ( or necessary ), hydraulic lines can be ...
• The device converts moderate pole spacing to fine pole spacing when needed .