Beam string structure (abbrev.BSS) is an inner equilibrium system whose bending resistance member and tension member is linked by brace strut.是什么意思_Beam string structure (abbrev.BSS) is an inner equilibrium system whose bending resistance member and tension member is linked by brace strut.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句