유리판 레벨계의 자기보호 장치, 단면도
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온라인에서 단면도를 찾아서 여러분의 참고용으로 제공합니다
아, 그렇군요. 전부 켜도 작동하지 않는 게 당연하네요
처음 구조를 봤을 때, 전에는 어떻게 닫는지 궁금했어요. 감사합니다
완전히 열렸을 때, 공이 떨어져서 밀봉면을 가렸어요
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