The utility model provides a trigonal pencil which consists of a pencil core and a pencil body, and is characterized in that the trigonal pencil body is arranged on the periphery of the pencil core.
本实用新型提供一种由铅笔芯和铅笔体组成的三棱 铅笔，其特征是：在铅笔芯外围设置一三棱柱形铅笔体。
To study tree rings, researchers generally take a pencil-sized core from a tree.
为了对年轮进行研究，研究人员通常会从树木取出一块铅笔大小的核心部分。
The latex with higher core T_g has more obvious core-shell structure, and the pencil hardness of the film is higher.
较高的核玻璃化温度则有利于形成明显的核壳结构乳胶粒子，且有助于漆膜硬度的提高。
An electric pencil sharpener USES a toy motor as power and is composed of conic casing with tubular ends, multi-edge cutter for wooden part and a small abrasive wheel for lead core.
一种电动卷笔器，玩具电动机经齿轮减速装置与一中部为锥形，两端为空心圆筒的多刀刃卷笔刀筒机械连接。小砂轮套装在玩具电动机轴上。
An electric pencil sharpener USES a toy motor as power and is composed of conic casing with tubular ends, multi-edge cutter for wooden part and a small abrasive wheel for lead core.
一种电动卷笔器，玩具电动机经齿轮减速装置与一中部为锥形，两端为空心圆筒的多刀刃卷笔刀筒机械连接。小砂轮套装在玩具电动机轴上。
应用推荐