For example: mass spectrometry, and refrigerator assembly line, vacuum freeze-drying machine.

例如：质谱仪器，冰箱流水线，真空冷冻干燥机等。

youdao

For example: mass spectrometry, and refrigerator assembly line, vacuum freeze-drying machine.

例如：质谱仪器，冰箱流水线，真空冷冻干燥机等。

youdao