The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Laws/Policies/Regulations
Companies/Products
Bookmark and Share
zi zhi xie xing ti wan cheng zuo shi yan
Author(s): 
Pages: 26-27
Year: Issue:  3
Journal: Experiment and Equipment for Primary School

Abstract:  将刨光的宽约4cm、厚约3cm的长方木,画出间距约8cm分割线,并在侧面画出对角线,使用截割铁棍用的手锯,先沿对角线锯出斜面后,再沿分割线分段锯割成高约3cm、宽约4cm、底边长约7.5cm的楔形体,把新砂布平放在桌面上,手指抹住楔形体研磨它的斜面表面,并用剪子把楔形体的前端剪齐后,在楔形体的斜面顶边钉牢一根跟斜面侧边垂直的"限位"木条(如图1所示),把它平放在水平的实验桌面上,可供学生3个实验...
Related Articles
No related articles found