上海机床厂GPA2-16-EK1-20-R GPA2-16-EK2-20-R内齿轮泵油泵上海机床厂GPA2-16-EK1-20-RGPA2-16-EK2-20-R内齿轮泵油泵上海机床厂GPA2-16-EK1-20-RGPA2-16-EK2-20-R内齿轮泵油泵上海机床厂GPA2-16-EK1-20-RGPA2-16-EK2-20-R内齿轮泵油泵上海机床厂GPA2-16-EK1-20-RGPA2-16-EK2-20-R内齿轮泵油泵上海机床厂GPA2-16-EK1-20-RGPA2-16-EK2-20-R内齿轮泵油泵上海机床厂GPA2-16-EK1-20-RGPA2-16-EK2-20-R内齿轮泵油泵 上海机床厂GPA2-16-EK1-20-R GPA2-16-EK2-20-R内齿轮泵油泵上海机床厂GPA2-16-EK1-20-RGPA2-16-EK2-20-R内齿轮泵油泵 上海机床厂GPA2-16-EK1-20-RGPA2-16-EK2-20-R内齿轮泵油泵 上海机床厂GPA2-16-EK1-20-RGPA2-16-EK2-20-R内齿轮泵油泵 上海机床厂GPA2-16-EK1-20-RGPA2-16-EK2-20-R内齿轮泵油泵