| 释义 |
balata|ˈbælətə|
Also 9 ballata.
[S. Amer. Sp., prob. ad. a native word. So Fr. (1777).]
1. Any of several trees of Guyana and the W. Indies belonging to the family Sapotaceæ, esp. Mimusops balata. Also balata-tree.
1858L. A. A. de Verteuil Trinidad 101 Balata (Mimusops). The Balata, or Bullet-wood, is one of our best and most useful timbers. 1860Jrnl. Soc. Arts 24 Aug. 713/2 It appears also that the Sapota Mulleri, the tree producing the gutta percha of Surinam, is called Balata in French Guiana, Les Antilles, and elsewhere. 1864Grisebach Flora Brit. W. Ind. Isl. 781 Ballata tree (Dominica): Bumelia retusa. 1871Kingsley At Last I. vi. 223 A huge dark-headed Balata [note Mimusops Balata]. Ibid. vii. 257 (page-heading) The Balata Tree. 1922W. Schlich Man. Forestry (ed. 4) I. ii. 322 Mimusops globosa, the Balata, go to 120 feet high.
2. The dried juice or gum of Mimusops balata, used as a substitute for gutta-percha. Also attrib. and Comb.
1860Jrnl. Soc. Arts 24 Aug. 713/2 A few months ago it was announced in the French journals that M. Serres, Pharmacien, at Paris, had been so fortunate as to prepare gutta percha from the Balatas of the sapotaceous plants in Guiana and Central America. 1862Catal. Contrib. Brit. Guiana to Internat. Exhib. in R. Duff Brit. Guiana (1866) 99 The leaves, branches, and trunk [of the bully tree] produce a whitish milk, forming the gum, now known as ballata. 1864W. Holmes in Jrnl. Soc. Arts 4 Mar. 245/2, I believe..that Balata..will supply the great want of the day, as a good insulating medium for telegraphic purposes. 1867W. T. Veness El Dorado ix. 94 The ballata-gatherer..may thus bleed a great many trees in a single day. 1939Nature 12 Aug. 300/2 Thus a polymerhomologous series of celluloses exists and the same holds also for starch, glycogen, caoutchouc and balata. 1958J. Carew Wild Coast iv. 51 He had left the balata fields. Ibid. 52 He was carrying a heavy balata-coated canvas bag. 1959B.S.I. News June 10/2 Rubber-textile and balata-textile belting in many varieties..is extensively used for power transmission of all kinds. |