Can you tell me what these burettes are used for?

你能告诉我这些滴定管是干什么用的吗？

youdao

Burettes are used to deliver a known amount of liquid.

滴定管是用来转移一种已知体积的液体的。

youdao

Burettes are used to deliver a known amount of liquid.

滴定管是用来转移一种已知体积的液体的。

youdao