7fec8972b48a6cf63ae9e9e315837c3f3c5f4af5590b014cf4255b782fe726c9cbb47e1939c031fb4c2f2b8f63d651fb5828bc2256116bfae317de897ed0754e2dac84da59cd

1ebec223e0dc2bae61abe9e74683726d30d7a6cbef7288a191aa6125f2af8b3e667f93c43b163004137748ba3d5da8ebc4d96bfdfb92f3

1ebec223e0dc2bae61abe9e74683726d30d7a6cbef7288a092a06125f2af8b3e4840b76cd3da8a3803a5fa1c1f90993128538cd3330155

아니 왜 등밀도선이 등수압선인가요 ㅠㅠ

ㄱ 빼고는 ㄴ,ㄷ 싹다 이해가 안됨요.