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2026-04-04 19:05:51和谐的野狼
回复1)suede cord:绒面革制绳索2)paracord全称 paracord,也叫550 cord,中文名“降落伞绳/伞绳/550绳”降落伞绳(也叫伞绳或550绳),是一种较轻的尼龙制编绳,最初于二次世界大战美国伞兵使用。它能承受最少550镑的断裂强度,因此得名“550伞绳”,由于它的极好的弹力,在军用领域也非常受欢迎,当然,现在550绳不仅应用于军用,在工业领域也有大量应用。两种绳索的图片你可以用baidu/google搜索一下。参考:Parachute cord (also paracord or 550 cord) is a lightweight nylon kernmantle rope originally used in the suspension lines of US parachutes during World War II。 Once in the field, paratroopers found this cord useful for many other tasks。 It is now used as a general purpose utility cord by both military personnel and civilians。 This versatile cord was even used by astronauts during STS-82, the second Space Shuttle mission to repair the Hubble Space Telescope。[1]Types(分类):US Military issue paracord is specified by MIL-C-5040H in six types: I, IA, II, IIA, III, IV。[2] Types IA and IIA are composed solely of a sheath without a core。 Type III, a type commonly found in use, is nominally rated with a minimum breaking strength of 550 pounds, thus the sobriquet "550 cord"。The US military specification for paracord outlines a number of parameters to which the final product must conform。 Although it contains specific denier figures for the sheath strands and inner yarns, there are no overall diameter requirements for the cord itself。 Below is a table of selected elements from the specification。Type Minimum breaking strength Minimum elongation Minimum length per pound Core yarns Sheath structure I 95 lb (43 kg) 30% 950 ft (290 m) 4 to 7 32/1 or 16/2 IA 100 lb (45 kg) 30% 1050 ft (320 m) <no core> 16/1 II 400 lb (181 kg) 30% 265 ft (81 m) 4 to 7 32/1 or 36/1 IIA 225 lb (102 kg) 30% 495 ft (151 m) <no core> 32/1 or 36/1 III 550 lb (249 kg) 30% 225 ft (69 m) 7 to 9 32/1 or 36/1 IV 750 lb (340 kg) 30% 165 ft (50 m) 11 32/1, 36/1, or 44/1 The braided sheath has a high number of interwoven strands for its size, giving it a relatively smooth texture。 The all nylon construction makes paracord fairly elastic; depending on the application this can be either an asset or a liabilityCivilian availability(民用):The same properties which soldiers appreciate in paracord are also useful in civilian applications。 After World War II parachute cord became available to civilians, first as military surplus[3] and then as a common retail product。 While some commercially available paracord is made to specification, even when labeled as such a given product may not correspond exactly to a specific military type and can be of differing construction, quality, color, or strength。 Particularly poor quality examples may have significantly fewer strands in the sheath or core, cores constructed of bulk fiber rather than individual yarns, or include materials other than nylon。Paracord has also been used by many since the 1970s for whipmaking。 The durability & versatility of this material has proved beneficial for performing whip crackers & enthusiasts。 Since nylon doesn't rot or mildew, it has become known as an all-weather material for whipmaking。 Nylon whips have grown in popularity over the last few decades, more so in the last several years。[citation needed]下面是550绳中的一种:
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