Round Pin Shackles are considered un-safe as the cotter pin, if removed or not installed, falls off during a lift can cause the shackle to fail.是什么意思_Round Pin Shackles are considered un-safe as the cotter pin, if removed or not installed, falls off during a lift can cause the shackle to fail.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句