Use two O-rings if the material is very dilute.

如果物料特别稀，请使用两个O型圈。

youdao

For both O-rings and foam, that first decision was a turning point.

对O型密封圈和泡沫，这个第一次决定都是转折点。

youdao

For both O-rings and foam, that first decision was a turning point.

对O型密封圈和泡沫，这个第一次决定都是转折点。

youdao