2.bractlet apex subacute, without an acicular awn.
稍尖的小顶，没有一针状的芒。
3.The results showed that the properties of PA66 were improved and the cost of material was decreased with the addition of the superfine acicular datolite short-fiber.
实验表明,超细针状灰石短纤维的加入不仅使PA66的各种性能得到改善,而且原料成本有所下降。
4.Utricles convex abaxially, plane or slightly concave adaxially; rostra 1/8-1/5 length of kernel; seed adherent to pericarp; leaves and bracts acute but not acicular at apex.
胞果凸背面，正面的平面或者稍凹；喙1/8-1/5段珠心；种子附着于果皮；叶和尖但不是针状的在先端。
5.Utricles convex on both sides; rostra nearly equal to length of kernel; seed free from pericarp; leaves and bracts acicular to spinulose at apex.
胞果凸的两面；喙差不多等于珠心的长度；种子离生的果皮；对具刺的在先端针状的叶和。
6.Crystal habit: prismatic crystals elongated on c, often flattened on {100} with deep vertical striations, also can be acicular or in cleavable masses.
晶体结构特征：单斜晶系，柱状晶体，扁平柱状晶体，常有熔蚀现象，并有明显的三角形表面印痕。
7.The microstructure of the sample glaze layer under polarizing microscope and reflecting microscope has showed acicular hausmannite crystals on the glaze layer sur...
;
黄色的;
顶，没有一针状的芒。
灰石短纤维的加入不仅使PA66的各种性能得到改善,而且原料成本有所下降。
尖但不是针状的在先端。
刺的在先端针状的叶和
