实验次数
与木块的接触面
木块的放置方式
弹簧测力计的示数/N
1
长木板表面
一木块平放
1.8
2
2.9
3
毛巾表面
2.4
4
两木块叠加平放
3.6
读拼音写词语。
tuī qiāo
sāo rǎo
zhēn xī
dīng zhǔ
____
sōu
xù shù
wén zi
xún mì
____索
miǎn tiǎn
liáo tiān
pín fán
xiǎo xīn yì yì
- These problems are too hard to . Will you give me some advice?
- There are many ways. The most important is to have a careful plan.