| 释义 |
spinneret|ˈspɪnərɛt|
Also spin(n)aret, spinnerette.
[dim. of spinner: see -et1.]
1. An organ or process by which the silk, gossamer, or thread of certain insects, esp. silkworms and spiders, is produced; a spinning-organ; spec. (a) one of the pores or tubules on the lower lip of a silkworm or caterpillar; (b) one of the nipple-like mammillæ on the abdomen of a spider.
(a)1826Kirby & Sp. Entomol. III. xxx. 124 On each side of the apex of the under-lip is a minute feeler, and in the middle..is a filiform organ, which I shall call the spinneret (Fusulus), through which the larva draws the silken thread employed in fabricating its cocoon. 1863Spencer Ess. II. 336 It appears that the ultimate fibre of silk is coated, in issuing from the spinneret of the silk-worm, with a film of varnish. 1888Rolleston & Jackson Anim. Life 148 The median lobe..carries.. a central tubular projection, the spinneret, upon which opens the common duct of the two silk glands.
(b)1835–6Todd's Cycl. Anat. I. 209/1 The surface of each of the spinnarets [of the spider] is pierced by an infinite number of minute holes. 1841T. R. Jones Anim. Kingd. 317 The fluid silk,..when it is drawn through the microscopic apertures of the spinneret, affords the material whereof the web is constructed. 1849Proc. Berw. Nat. Club II. 371 A minutely bituberculated wart, somewhat like the spinnerets of the spider. 1926T. H. Savory Brit. Spiders 8 Now it raises its abdomen..and secretes a drop of silk from its spinnerettes.
fig.1877Athenæum 1 Dec. 701/2 The web is now before us, but the spinnerets used in the elaboration of most of it have been the scissors, and the gossamer, paste.
(c)1835Kirby Hab. & Inst. Anim. I. viii. 254 The spinnerets..of various shell fish [are] in their foot.
2. A cap or plate having a number of small holes through which a spinnable solution is forced in the production of man-made fibres; an individual hole or channel in such a plate.
1894Work 7 July 391/2 The resultant..substance..is next forced..through minute holes in a glass spinneret. 1927M. H. Avram Rayon Indusry viii. 197 Glass spinnerettes are now produced with 66 holes. 1957D. C. Hague Economics of Man-Made Fibres iii. 93 Nylon is a truly synthetic fibre... In fact, it is a plastic which has been forced through a spinnerette to form a textile fibre. 1973Materials & Technology VI. iv. 291 The number of holes in a spinneret will determine the number of filaments which will be present in the yarns; this usually varies between 15 and 100. |