Further more steel can be saved by horizontal H-sections than by vertical ones;besides the larger the space between the roof trusses, the much the steel will be saved.是什么意思_Further more steel can be saved by horizontal H-sections than by vertical ones;besides the larger the space between the roof trusses, the much the steel will be saved.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句