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Shear bolt connector Publisher’s Notice: MDPI stays neutral with regard to jurisdictional promises in released maps and institutional affiliations.절연유를 충진한 부싱은 유면계를 구비하고, 절연유는 광선이나 습기에 의하여 열화 되지 않도록 완전히 밀봉되어야It is important to evaluate the result of the