-
In all these examples, this rope is assumed to be massless.
在所有这样的题目里都假设绳子没有质量
应用推荐
$firstVoiceSent
- 来自原声例句
In all these examples, this rope is assumed to be massless.
在所有这样的题目里都假设绳子没有质量
应用推荐