Leaf blade leathery; pistillode conic to cylindric; drupes indehiscent, enclosed by persistent calyx lobes.
叶片卵到圆,先端钝,短渐尖,骤尖;瘦果宽卵球,略带紫色点瘤状。
Leaf blade leathery; pistillode conic to cylindric; drupes indehiscent, enclosed by persistent calyx lobes.
叶片卵到圆,先端钝,短渐尖,骤尖;瘦果宽卵球,略带紫色点瘤状。
In this paper,a new small-sized bit is introduced.The bit is mainly composed of a biassed polyconic cutter,a cylindric roller and two bit legs.
文章介绍了一种新型小尺寸钻头,它主要由一个偏置多锥牙轮和一个圆柱滚轮及两个牙掌组成。
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