obdurate
adj
(fml 文) impossible to change; stubborn 固执的; 执拗的
an obdurate refusal 坚决的拒绝
He remained obdurate, refusing to alter his decision. 他依然固执己见, 拒不改变决定.
notes there are now work-stations that enable engineers to design, test and produce chips right on their desks, much the way an editor creates a newsletter on a Macintosh.