英语词汇背线是什么意思，背线的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典-觉斋网

单词	背线
释义	DEFINITIVE EXAMPLES 权威例句〔extrados〕The upper or exterior curve of an arch.拱背线：拱顶上面或外缘的曲形线美国传统
随便看	high-density high-density high-density high-density assembly high-density bipolar code high-density culture high-density polyethylene(HDPE) high-duty boiler high-duty refractory high-earning high-earning high-elastic state high-end high-end high-end high-end high-energy high-energy high-energy high-energy bond high-energy electron diffraction (HEED) high-energy fuel high-energy type high-enriched uranium (HEU) high-etmperature chemistry

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