The principle,injection process and parameters of moulding for the super miniature and high precision optical pickup unit(OPU)in a laser head were presented.是什么意思_The principle,injection process and parameters of moulding for the super miniature and high precision optical pickup unit(OPU)in a laser head were presented.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句