vacuum manifold

When there is vacuum in the intake manifold, the vacuum holds the diaphragm up.

当进气歧管有真空存在时, 真空便向上吸引膜片.

This vacuum, called intake-manifold vacuum, varies as the operating conditions change.

这个真空叫做进气歧管真空.这种进气歧管真空随运转情况而变化.

In the roundpiston VV carburetor, the piston is moved by intake-manifold vacuum.

在圆形活塞的VV化油器中, 活塞是由进气歧管真空移动的.

A few percent of the CO2 molecules in the air manage to find such electrons. When there is vacuum in the intake manifold, the vacuum holds the diaphragm up.

空气中的一部分co2分子会吸引那些自由电子。当进气歧管有真空存在时，真空便向上吸引膜片。

The Casimir energy is a kind of zero-point energy of quantized fields and can be considered as the energy of vacuum polarization of quantized fields due to the presence of boundaries, the curvature of the space-time manifold or some background fields.

Casimir能量是量子场的一类零点能，是由于边界的出现、时空的弯曲以及某些背景场的存在而引起的。