pencil sharpener with multiplication tables incorporated

• 1. 一种带有太阳能充电的铅笔刀 [P] . 中国专利： CN103640378A . 2014-03-19
• 2. 一种带有铅笔刀的笔筒 [P] . 中国专利： CN101734067A . 2010-06-16
• 3. Pencil sharpener with multiplication function [P] . 韩国专利： KR970000796U . 1997-01-21

  机译： 具有乘法功能的卷笔刀

• 4. pencil sharpener blade incorporated. [P] . IT8463362V0 . 1984-10-15

  机译： 装有铅笔刀刀片。

• 5. Pencil sharpener, has cutting blade holder with clearance and storage holes, and cutting blade mounted on clearance hole for sharpening lead of pencil, where sharpener is manufactured as detachable part of pencil [P] . 德国专利： DE202005011665U1 . 2005-10-27

  机译： 削笔器，具有带有间隙和存储孔的切割刀片支架，以及安装在间隙孔中的用于将铅笔芯削尖的切割刀片，制造卷笔刀作为铅笔的可拆卸部分

• 1. On the Structure and Functions of the Multiplication Table in the Tsinghua Collection of Bamboo Slips [J] . Feng Lisheng 中国科学技术史（英文） . 2017,第001期
• 2. On the Structure and Functions of the Multiplication Table in the Tsinghua Collection of Bamboo Slips [J] . 冯立昇, 吕昕(译) 中国科学技术史：英文版 . 2017,第001期
• 3. Design and Application of Humanized Pencil Sharpener [C] . Xia Zhi-Liang, Tian Qi-Ming International Conference on Mechanical Engineering and Intelligent Systems . 2015
• 4. The Relationship of Multiplication Tables and Fraction Operations to Learning Algebra. [D] . Willis, Allen Kent. 2011
• 5. Comparative bio-accessibility bioavailability and bioequivalence of quercetin apigenin glucoraphanin and carotenoids from freeze-dried vegetables incorporated into a baked snack versus minimally processed vegetables: Evidence from in vitro models and a human bioavailability study [O] . Natalia Perez-Moral, Shikha Saha, Mark Philo, -1
• 6. Design and Application of Humanized Pencil Sharpener [O] . Zhi-Liang Xia, Qi-Ming Tian 2015

• 1. 电动铅笔刨Electric Pencil－sharpener [J] . 王元荪 . 文体用品与科技 . 2003,第008期
• 2. A Multivariate Test for Three-Factor Interaction in 3-Way Contingency Table under the Multiplicative Model [J] . Njoku O. Ama . 统计学期刊（英文） . 2014,第8期
• 3. On Multiplication Tables of Normal Bases and Their Dual-bases Over Finite Fields [J] . 廖群英 ,孙琦 . 数学进展 . 2004,第004期
• 4. 带有表面锈坑的钢板断裂机理数值研究 [C] . 张海江 ,徐善华 . 第28全国结构工程学术会议 . 2019
• 5. 两类带有双源项的耦合反应扩散系统和两类带有动力边界条件的抛物方程的整体适定性 [A] . 刘玉 . 2012