长丝是极长的纤维，包括天然丝和化纤丝。
Filament is very long fibre, including the natural fibre silk and the synthetic fibres.
现在他们已经创造出了能与蜘蛛丝媲美的天然丝。
但是当那些晶体增大到5纳米时，天然丝就变得脆弱而且易脆了。
But let those crystals grow to five nanometers, and the material becomes weak and brittle.
天然丝及角质蛋白，令头发轻盈柔顺不打结，带来丝般的光泽及触感。
The natural silk and keratin make your hair light, anti-detangle, bringing silky shine and texture.
尼龙的强度几乎是天然丝的两倍，而且不象天然丝那样易受水的影响。
Nylon is nearly twice as strong as natural silk and much less affected by water than it.
打字机和打印机上所使用的一种带状编织品，材料为棉花、天然丝、合成纱等。
On a typewriter or a printer, a ribbon of woven material, for example, cotton, natural silk, synthetic yarn.
比勒的团队进行了一系列原子水平的计算机模拟，以考察天然丝中分子失灵的机制。
Buehler's team carried out a series of atomic-level computer simulations that investigated the molecular failure mechanisms in silk.
天然丝由蛋白质构成，包括一些形成被称为β褶板（beta-sheet）的平薄晶体的蛋白质。
Silks are made from proteins, including some that form thin, planar crystals called beta-sheets.
当晶体大小大约为3纳米（1纳米等于10亿分之一米）时，天然丝材料具有超强的强度与延展性特征。
When the crystal size is about three nanometers (billionths of a meter), the material has its ultra-strong and ductile characteristics.
对于天然丝，他们的研究方法采用计算机模型，来帮助确定使天然丝材料具有卓越力学特性的分子与原子机制。
With silk, that means using computer models that help determine the molecular and atomic mechanisms responsible for the material's remarkable mechanical properties.
“微小但刚硬的晶体显示了天然丝迅速对断裂的化学键进行重组织的能力，同时作为‘温和地’失灵的一种结果——就是说，逐渐失灵比突然失灵要好，”研究生凯滕解释说。
“Small yet rigid crystals showed the ability to quickly re-form their broken bonds, and as a result fail ‘gracefully’ — that is, gradually rather than suddenly,” graduate student Keten explains.
“微小但刚硬的晶体显示了天然丝迅速对断裂的化学键进行重组织的能力，同时作为‘温和地’失灵的一种结果——就是说，逐渐失灵比突然失灵要好，”研究生凯滕解释说。
“Small yet rigid crystals showed the ability to quickly re-form their broken bonds, and as a result fail ‘gracefully’ — that is, gradually rather than suddenly,” graduate student Keten explains.
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