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- AIP 잠수함 중 샹급 21척 3600톤 파키스탄에 8척 50억불 수출 태국 3척 초도함 재래식 잠수함대 50여척 핵잠 16척 보하이조선 디젤 잠수함 우한조선소 건조 체제 #한국22척 중 AIP 13척 Type 039A/B/C submarine The Type 039A/B/C submarine[a] (NATO reporting name: Yuan class (Romeo class) and the older Type 035 submarines that previously formed the backbone of the c.......
- [] What are Fluoropolymers, What's the Difference between PTFE and PFA Fluoropolymers are a class of polymers with a carbon-carbon backbone in which the fluorines are linked