valid approximation英语标准发音:valid approximation英式发音:美式发音:翻译中文有效近似valid approximation - 基本释义[词典1]允许近似值valid approximation - WEB词典valid approximation允许近似值 参考资料: 1.百度翻译:valid approximation2.有道词典:valid approximation3.爱词霸:valid approximation