The sonic velocity orientation structures and mechanical properties of new material of bulked silk and memory silk,ect.by measuring the sonic velicity orientation and modulus are studies .是什么意思_The sonic velocity orientation structures and mechanical properties of new material of bulked silk and memory silk,ect.by measuring the sonic velicity orientation and modulus are studies .在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句