英语词汇portal frame怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	portal frame
释义	portal frame noun Engineering a rigid structural frame consisting essentially of two uprights connected at the top by a third member 【工程】门框。
随便看	fourfold four hundred Fourier Fourier analysis Fourierism Fourierist Fourier series Fourier transform four-in-hand four-leaf clover four-letter word four noble truths four o'clock fourpenny fourpenny one four-ply four-poster fours fourscore foursome four-square four-star four-stroke fourteen fourteenth

英汉双解词典包含131075条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。