ПЕРЕВЕДИТЕ.

In spite of the difficulty of measuring machinability, it has been defined as the ease with which a material can be machined. 
The most machinable metal may be said to be one that permits the fastest removal of the greatest amount of material with a satisfactory finish before resharpening of the tool is required.
Several methods have been used to evaluate machinability, such as the power consumed under some standard condition, the rate of tool penetration under some standard condition, the temperature produced under specified conditions, and so fort