本发明涉及高真空油，为解决具有高真空设备所需要的耐高温、高真空度的真空油。
The present invention provides a high vacuum oil with high-temp. resistance and high vacuum degree for high vacuum equipment and its preparation method.
本发明涉及高真空油，为解决具有高真空设备所需要的耐高温、高真空度的真空油。
The present invention provides a high vacuum oil with high-temp. resistance and high vacuum degree for high vacuum equipment and its preparation method.
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