万分 wànfēn HSK7 extremely Origin Definitions Defs Strokes Stroke Words Sentences Sents Showing: ten-thousandth All meanings 6 wànfēn 6 extremely 5ten-thousandth 1 1 sentence for 万分 (wànfēn — ten-thousandth) 这项技术的误差要求控制在万分级别。 zhè xiàng jìshù de wùchā yāoqiú kòngzhì zài wànfēn jíbié. The error requirements for this technology must be controlled at the ten-thousandth level. Source: Dong Chinese Dictionary