при помощи

см. тж. посредством; путём; с помощью

• With this microscope the particles can be magnified up to 15,000 times.

• The age of very ancient rocks may be measured using the potassium-argon method.

• By (or With) such a method ...

• The dry box is evacuated by a vacuum pump.

• The bearings are mounted on the shaft by the use of a hydraulic system.

• Refuelling is accomplished with [the aid (or help) of] (or by means of) a simple machine.

• Solid state bonds can be achieved with (the use of) ultrasonic welding.

• The surface of normal velocity may often be constructed by means of the reciprocal surface.

• Circular polarization is obtained through the use of the slots ...

• Irregular surfaces can be treated by use of the servo control system.

• We can introduce the curves through Eq. (1.14).

• The stereochemical relationships between ... can be determined by reference to the Fischer projection of ...

• The gas laws can be understood through a model.