例句與造句

1. Roughness can be measured by manual comparison against a " surface roughness comparator ", a sample of known surface roughnesses, but more generally a surface profile measurement is made with a profilometer that can be contact ( typically a diamond stylus ) or optical ( e . g . a white light interferometer or laser scanning confocal microscope ).
2. It's difficult to find surface profile measurement in a sentence. 用surface profile measurement造句挺難的