- negative head
- 负压: negative pressure; subatmosp ...
- 头: 5点就得动身 have to start before ...
- 负压压头: negative head
- 负压: [物理学] negative pressure; subatmospheric pressure
- 压头: compression tool; discharge head; hd head; head of delivery; head of pressure; head pressure; impresso; indenter; indentor; measuring head; penetrator; pre ure head; press head; pressure head; pressurehead; pressureheight; rammer; resistance head
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