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The blisters were deliberately inflicted on the test subjects by using a vacuum pump on the arm.
这些水泡是用真空泵特意“种”在实验参与者的胳膊上的。
youdao
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On-site vacuum pump installation, test and repair;
在客户现场完成泵的安装、调试及维修。
youdao
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On-site vacuum pump installation, test and repair;
在客户现场完成泵的安装、调试及维修。
youdao