ventilator cover是什么意思 ventilator cover怎么读
ventilator cover的用法和样例
- Detailed data show that all the four schemes are feasible, yet the last named scheme keeps the opened cover intact and makes it fly along the expected direction.
经试验验证，各向异性材料的发射筒盖方案能按预先期望的方向整体飞出。
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