发布网友 发布时间:2022-04-21 23:45
共2个回答
热心网友 时间:2023-07-01 17:18
在古代,丝绸就是蚕丝(以桑蚕丝为主,也包括少量的柞蚕丝和木薯蚕丝)织造的纺织品。现代由于纺织品原料的扩展,凡是经线采用了人造或天然长丝纤维织造的纺织品,都可以称为广义的丝绸。而纯桑蚕丝所织造的丝绸,又特别称为“真丝绸”。
In ancient times, silk was a textile made of silk (mainly mulberry silk, including a small amount of tussah silk and cassava silk). In modern times, e to the expansion of textile raw materials, any textile woven with artificial or natural filament fibers can be called silk in a broad sense. The silk woven by pure mulberry silk is especially called "real silk".
丝绸
丝绸所含的天然纤维主要是蚕丝纤维,是熟蚕结茧时所分泌丝液凝固而成的连续长纤维,也称天然丝,是人类利用最早的动物纤维之一,包括桑蚕丝、柞蚕丝、蓖麻蚕丝、木薯蚕丝等。
唯一得到实际应用的天然长丝纤维,由蚕改粘液凝固而成。蚕丝纤维因蚕的食性不同分成多种,其中有食桑叶形成的桑蚕丝纤维、食柞树叶形成的柞蚕丝纤维以及食木薯叶、马桑叶、蓖麻叶形成的其他野蚕丝纤维。
桑蚕丝纤维和柞蚕丝纤维可以把长丝纤维的形态保留到集束形成的长丝纱中,其他的几种野蚕丝纤维只能被改形为短纤维用纺织加工。在用桑蚕丝纤维和柞蚕丝纤维集束形成的长丝纱中,桑蚕丝纤维的长丝纱最重要,占天然长丝纱的大部分。
热心网友 时间:2023-07-01 17:19
Silk is one of China's greatest treasures. It is a type of fabric made from the cocoons of silk worms. The making of silk has been a secret of China for many years until some Chinese people were kidnapped and forced to tell the secret to the Europeans. Silk is very soft in texture and has been traded for lots of money on the Silk Road before.