释义 |
silver grain Also silver-grain. [silver n. and grain n.1 15.] (See quot. 1882.)
1801[see grain n.1 15]. 1832Planting 8 in Lib. Usef. Kn., Husb. III, The wood of the elm..is distinguished by having the medullary rays, or silver grain, equal, and not crowded. 1858Carpenter Veg. Phys. §99 The thin plates which they form..are known to carpenters and cabinet-makers as the silver grain. 1882Vines tr. Sachs' Bot. 131 If a thick stem is split longitudinally, the rays have the appearance, in many close woods, of glistening bands (the ‘Silver-grain’), traversing the prosenchymatous woody tissue in a radial direction. |