论文部分内容阅读
材料:(1)长28公分、宽2公分、厚1公分木条一条,记为AB;(2)是25公分、宽2公分、厚0.5公分木条一条,记为CD;(3)是26公分、宽2公分、厚1.5公分木条一条,记为EF;(4)重物一个;(5)线少许;(6)大头针1枚。制作方法: I:(1)于AB尺上,在A端开一凹槽深O.5公分,凹槽的形状为口小底大(如图1的俯视图与侧视图),使凹槽的右侧离B端为25公分,此槽称为A槽。 (2)把CD的二边削成斜状,(如图2)便于播入A槽内滑动,于C端钉入一大头针。 (3)把EF的背面挖2公分宽、1公分深的凹槽,使凹槽左侧离F端为25公分。 (4)用线系好重物。
Materials: (1) 28 cm long, 2 cm wide, 1 cm thick wood strip, denoted as AB; (2) 25 cm wide, 2 cm wide, 0.5 cm thick wood strip, recorded as CD; (3) Yes 26 centimeters, width 2 centimeters, and thickness 1.5 centimeters of wooden slats, denoted as EF; (4) one weight; (5) a little line; (6) one pin. Production method: I: (1) On the AB rule, open a groove deep in the A end O. 5 cm, the shape of the groove is a small mouth bottom (Figure 1 top and side view), so that the groove The right side is 25 centimeters from the B end, this slot is called A slot. (2) Cut the two sides of the CD into an oblique shape (Fig. 2). It is easy to slide into the A groove and insert a large pin at the C end. (3) Dig the groove of 2 cm wide and 1 cm deep on the back of the EF so that the left side of the groove is 25 cm from the F end. (4) Use a wire to tie heavy objects.