求積儀(planimeter)是用來測量什麼的?
正確答案: 任意二維圖形的面積
![猜](https://p.cdn.quizzclub.com/ql/2022-03-01/35bd0d48acd140c8ab0badeb72988969.jpg?qv=1)
猜
好
![COFFEE](https://cdn.best-quiz.com/avatars/0.png)
COFFEE
good
![intelligent clever hello](https://cdn.best-quiz.com/avatars/0.png)
intelligent clever hello
ok