- single pass cross flow
- 单程: one way; one path
- 错: wrong; mistaken; erroneous
- 错流: cross current; cross flow; cross-current flow; cross-flow
- 单程: one way; one path◇单程车票 one-way ticket; single ticket; 单程出境签证护照 single exit visa in one's passport
- 错流区: crossflow zone
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