No force exerted on jigs or on damageable parts.Work can only be done at the set position of the hoisting ring, support and bucket ears.是什么意思_No force exerted on jigs or on damageable parts.Work can only be done at the set position of the hoisting ring, support and bucket ears.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句