| Expression | 旋标装置飞机控制板上的指示器或观测仪，用来测量角度 |
|---|---|
| Meaning | An indicator or a sighting apparatus on a plane table, used in angular measurement. |
| Reading | xuàn biāo zhuāng zhì fēi jī kòng zhì bǎn shàng de zhǐ shì qì huò guān cè yí， yòng lái cè liàng jiǎo dù |
Tags: hsk3-limited3-part4
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