-
After installing the protractors , check the assembly for squareness prior to using the machine.
按完量脚器后, 请在使用前仔细检查各个部件的按装.
pl-n. 量角器;分度规;牵引肌;(protractor的复数)
After installing the protractors , check the assembly for squareness prior to using the machine.
按完量脚器后, 请在使用前仔细检查各个部件的按装.