- two-part code
- 二: two
- 单元: unit; unit element; cell; lo ...
- 码: a sign or object indicating ...
- 单元码: code unitary; unitary code
- 第二单元: english around the world; sectionii; unit two appeal statement; unit two closing speech; unit two decision; unit two invitation fbr bids; unit two language of official documents; unit two lerers of introduction; unit two plan; unit two regulations
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