engine intake vacuum 发动机进气管真空度
Intake manifold vacuum meter 进气歧管真空度表
vacuum from intake manifold 来自进气歧管真空
vacuum intake 真空吸料 ; 真空
intake manifold vacuum 进气管真空度
imv intake manifold vacuum 进气歧管真空度
This particular newer model has a better intake vacuum system & motor, plus better brushes and the dust bin works more efficiently.
这款特别的新型号有一个更好的进气真空系统和电机，加上更好的刷子，使得打扫工作更有效率。
The piston moves up and down in the piston chamber primarily in response to changes in intake manifold vacuum.
活塞主要因进气歧管真空度的变化而在活塞腔内上下移动。
When the engine is shut off, the intake manifold cools and a slight vacuum forms as a result .
这是因为当发动机熄火时，进气歧管冷却而产生轻微的真空。
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