HSK 7-9
测定
cèdìng动
to determine (by measuring or surveying)
技术员正在测定水的酸度。
Jì shù yuán zhèng zài cè dìng shuǐ de suān dù.
The technician is measuring the acidity of the water.
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Appears across levels (7-9) in the HSK 3.0 word list.