variable spindle speed造句

This lathe had a belt variator actuated by a hydraulic servo arrangement, so that infinitely variable spindle speed was available by pushing a small lever on the right side of the apron.
The VSL ( for late machines, VSL500 ) was an AUD with infinitely-variable spindle speed control, larger bore through spindle,'L00'fitting for chucks instead of the threaded fitting of the other models and some other uprated features making it more attractive to industry.
It's difficult to find variable spindle speed in a sentence. 用variable spindle speed造句挺难的