If a cylinder ejector must be used, incorporate a proximity safety switch and use non-ferrous materials where it enters the die, or it must be of positive return design.是什么意思_If a cylinder ejector must be used, incorporate a proximity safety switch and use non-ferrous materials where it enters the die, or it must be of positive return design.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句