The average UK coal seam is one metre thick.英国煤层的平均厚度为 1 米。One metre of fabric is sufficient to cover the exterior of an 18-in-diameter hatbox...一米布足以包裹住直径为 18 英寸的帽盒。The materials do not occur naturally but a nano scale,...
一年生枝浅黄褐色, 具椭圆形皮孔, 尤以叶柄附近为多.On one - year - old tawny sticks, with oval - shaped Pikong, especially near the petiole more.聚合果长椭球形, 长达13厘米, 直径约9厘米,外果皮有苍白色皮孔.Aggregate long ellipsoid, 13 cm long, 9 cm in diameter ; pericarp...