The paper introduces a scheme of an automatic control s ystem for freeze-drying process procedure.The scheme is composed of supervisory personal computer,PLC and singlechip processor system.是什么意思_The paper introduces a scheme of an automatic control s ystem for freeze-drying process procedure.The scheme is composed of supervisory personal computer,PLC and singlechip processor system.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句