The primary technology processes are many scales of countercurrent extraction, vacuum concentration, a drop purification and vacuum drying in low temperature.

工艺主要流程为茶汤预处理后的多级逆流萃取、真空浓缩、纯化沉析、低温真空干燥。

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This paper discusses the relation between degree of vacuum and air flow in drop pipe when black liquor flow is constant.

本文叙述了当液体流量恒定时，水腿中（大气压管）吸入空气量与真空度的关系。

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Inspired by his dentist, Kelman figured out a way to use an ultrasound probe to disintegrate the cataract, a tiny vacuum to pull out the pieces, and a small incision to drop in the new lens.

FORBES: We Probably Spend Too Little On Health Care (Unless You're Peter Orszag)