confused about the sentence
"The porcelain bodies of luanbai wares have a greater aluminium oxide content than qingbai wares at 20-21 per cent."

I am confused about the meaning of it.
1.qingbai wares contains 20-21% aluminium oxide,and luanbai's is higher.
2.the aluminium oxide in luanbai is 20-21% higher than in qingbai.

which one is the right meaning?
thank you!

Question

confused about the sentence
"The porcelain bodies of luanbai wares have a greater aluminium oxide content than qingbai wares at 20-21 per cent."

I am confused about the meaning of it.
1.qingbai wares contains 20-21% aluminium oxide,and luanbai's is higher.
2.the aluminium oxide in luanbai is 20-21% higher than in qingbai.

which one is the right meaning?
thank you!

Answer

It means something different with different punctuation.
The porcelain bodies of luanbai wares have a greater aluminium oxide content than qingbai wares at 20-21 per cent = The qingbai wares have a 20-21 percent content and the luanbai wares have a greater content than that.
The porcelain bodies of luanbai wares have a greater aluminium oxide content than qingbai wares, at 20-21 per cent. (note the comma)= The luanbai wares have an aluminum oxide content of 20-21 percent, which is greater than that of the qingbai wares.
The sentence would be clearer as:
The porcelain bodies of the luanbai wares have an aluminium oxide content of 20-21 percent, which is greater than that of the qingbai wares.
(If that is the meaning, of course).

Answer

I would say this sentence is poorly phrased even for a native English speaker.  However, my guess is meaning number 1 is correct.

Verpassen Sie nicht die Gelegenheit, bequem von zu Hause aus eine Sprache zu lernen. Stöbern Sie in unserer Auswahl an erfahrenen Sprachlehrern und melden Sie sich jetzt zu Ihrer ersten Unterrichtsstunde an!