Vacuum partial pressure control system is composed of computer system, vacuum modulation valve and partial pressure pump, of which the valve is one of key parts of the equipment.

真空偏压控制系统由计算机系统、真空调节阀、真空偏压泵等部件构成，其中真空调节阀是设备的关键部件之一。

youdao

Air pumps are involved, but their role is limited to creating a partial vacuum in the pipes in order to reduce resistance to the capsules' movement.

也使用气泵，但作用仅限于在管道中制造半真空，以减小胶囊运行的阻力。

youdao

The placement of the glass cup creates a partial vacuum, which is believed to stimulate muscles and blood flow, while relieving pain.

这种放置方法会形成部分真空，据说这样能舒展肌肉，促进血液流通，从而缓解疼痛。

youdao

At certain points during the screening I attended, when the action was interrupted by major eruptions of information, a sealed chamber under partial vacuum might have described the screening room.

WSJ: Plot's Knots Bedevil 'Angels & Demons'

Among the movie's many revelations is the fact -- I'm taking the factuality on faith -- that the Vatican library's most treasured manuscripts are stored in sealed chambers under a partial vacuum.

WSJ: Plot's Knots Bedevil 'Angels & Demons'