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halotrichite 铁明矾 铁明矾 Halotrichite \ Hal* o* tri" chite\ ( h[ a^] l*[- o]* tr[ imac]" k[ imac] t), n. [ Gr. " a` ls sea qri` x, tricho` s, hair.] ( Min.) An iron alum occurring in silky fibrous aggregates of a yellowish white color. [ 1913 Webster]
Feather \ Feath" er\ ( f[ e^][ th]"[~ e] r), n. [ OE. fether, AS. fe[ eth] er; akin to D. veder, OHG. fedara, G. feder, Icel. fj[" o][ eth] r, Sw. fj[ aum] der, Dan. fj[ ae] der, Gr. ptero` n wing, feather, pe` tesqai to fly, Skr. pattra wing, feather, pat to fly, and prob. to L. penna feather, wing. [ root] 76, 248. Cf. { Pen} a feather.] 1. One of the peculiar dermal appendages, of several kinds, belonging to birds, as contour feathers, quills, and down. [ 1913 Webster] Note: An ordinary feather consists of the quill or hollow basal part of the stem; the shaft or rachis, forming the upper, solid part of the stem; the vanes or webs, implanted on the rachis and consisting of a series of slender lamin[ ae] or barbs, which usually bear barbules, which in turn usually bear barbicels and interlocking hooks by which they are fastened together. See { Down}, { Quill}, { Plumage}. 2. Kind; nature; species; -- from the proverbial phrase, " Birds of a feather," that is, of the same species. [ R.] [ 1913 Webster] I am not of that feather to shake off My friend when he must need me. -- Shak. [ 1913 Webster] 3. The fringe of long hair on the legs of the setter and some other dogs. [ 1913 Webster] 4. A tuft of peculiar, long, frizzly hair on a horse. [ 1913 Webster] 5. One of the fins or wings on the shaft of an arrow. [ 1913 Webster] 6. ( Mach. & Carp.) A longitudinal strip projecting as a fin from an object, to strengthen it, or to enter a channel in another object and thereby prevent displacement sidwise but permit motion lengthwise; a spline. [ 1913 Webster] 7. A thin wedge driven between the two semicylindrical parts of a divided plug in a hole bored in a stone, to rend the stone. -- Knight. [ 1913 Webster] 8. The angular adjustment of an oar or paddle- wheel float, with reference to a horizontal axis, as it leaves or enters the water. [ 1913 Webster] Note: Feather is used adjectively or in combination, meaning composed of, or resembling, a feather or feathers; as, feather fan, feather- heeled, feather duster. [ 1913 Webster] { Feather alum} ( Min.), a hydrous sulphate of alumina, resulting from volcanic action, and from the decomposition of iron pyrites; -- called also { halotrichite}. -- Ure. { Feather bed}, a bed filled with feathers. { Feather driver}, one who prepares feathers by beating. { Feather duster}, a dusting brush of feathers. { Feather flower}, an artifical flower made of feathers, for ladies' headdresses, and other ornamental purposes. { Feather grass} ( Bot.), a kind of grass ({ Stipa pennata}) which has a long feathery awn rising from one of the chaffy scales which inclose the grain. { Feather maker}, one who makes plumes, etc., of feathers, real or artificial. { Feather ore} ( Min.), a sulphide of antimony and lead, sometimes found in capillary forms and like a cobweb, but also massive. It is a variety of Jamesonite. { Feather shot}, or { Feathered shot} ( Metal.), copper granulated by pouring into cold water. -- Raymond. { Feather spray} ( Naut.), the spray thrown up, like pairs of feathers, by the cutwater of a fast- moving vessel. { Feather star}. ( Zool.) See { Comatula}. { Feather weight}. ( Racing) ( a) Scrupulously exact weight, so that a feather would turn the scale, when a jockey is weighed or weighted. ( b) The lightest weight that can be put on the back of a horse in racing. -- Youatt. ( c) In wrestling, boxing, etc., a term applied to the lightest of the classes into which contestants are divided; -- in contradistinction to { light weight}, { middle weight}, and { heavy weight}. { A feather in the cap} an honour, trophy, or mark of distinction. [ Colloq.] { To be in full feather}, to be in full dress or in one' s best clothes. [ Collog.] { To be in high feather}, to be in high spirits. [ Collog.] { To cut a feather}. ( a) ( Naut.) To make the water foam in moving; in allusion to the ripple which a ship throws off from her bows. ( b) To make one' s self conspicuous. [ Colloq.] { To show the white feather}, to betray cowardice, -- a white feather in the tail of a cock being considered an indication that he is not of the true game breed. [ 1913 Webster]
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以长鼻猴和吼猴为代表的灵长类动物在红树林中以叶片、花朵和果实为食,其每日摄食量可达体重的12%, 对红树林的生物量消耗和种子传播具有潜在
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英文则以“Mangrove”来通称所有的红树林植物,该字是由西班牙文中的树(Mangle)和英文中的树丛(Grove)所组成。 而现在所指的红树林仅局限于生长在热带海岸最高潮线以下,及平均高潮线以上之灌木或乔木。 世界红树林的种类约有10科16属55种。
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