с помощью

см. тж. при помощи

• These problems have been solved using (or employing, or by application of) the Schrodinger equation.

• This is usually accomplished via internal conversion.

• These compounds may be separated by fractional crystallization or through the agency of enzymes.

• Samples are prepared by different methods.

• The levers are operated by (means of) precision cams.

• The low-frequency components are attenuated by the use of a coupling capacitor.

• The temperature coefficients were determined through the use of ...

• This is more easily achieved with (the use of) inorganic phosphors.

• The readings are made with the help (or aid) of a microscope.