A number of accidents have been due to defective parts or components that represent only 1 or even 0.5 per cent of total output.是什么意思_A number of accidents have been due to defective parts or components that represent only 1 or even 0.5 per cent of total output.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句