释义 |
ve·llo process \ˈvel(ˌ)yō-\ noun Usage: usually capitalized V Etymology: after Leopoldo Sanchez-Vello, 20th century Spanish inventor : a process for producing glass tubing by dropping molten glass through an annular space surrounding a rotating hollow pipe, the diameter of the tubing being determined by pressure of the air passed through the pipe, drawing speed, and temperature of the glass |