Chinese phrase
尺码是按哪个标准的？ chí mǎ shì àn nǎ ge biāo zhǔn de
Meaning
What sizing standard are these sizes based on?
When to use it
This asks which sizing system the listed sizes follow. It is used when clothing or shoe sizes may follow different local or international standards, often in a polite shopping question.
Example dialogue
试穿之前我想问一下，尺码是按哪个标准的？ shì chuān zhī qián wǒ xiǎng wèn yí xià chí mǎ shì àn nǎ ge biāo zhǔn de
Before I try them on, could I ask what sizing standard these sizes are based on?
我们按国内标准，但页面有对应的国际对照表。 wǒ men àn guó nèi biāo zhǔn dàn yè miàn yǒu duì yìng de guó jì duì zhào biǎo
We follow domestic standards, but the page also has an international size comparison chart.