valve

• Other cars use a sealed cap and have separate vacuum-and pressure-relief valves .
  另一种类型的汽车使用密封式油箱盖，并带有独立的真空--压力减压阀。
• The latter may be used with bypass or throttling valves in the tower water pipework circuit .
  近来，可采用在冷却塔的水管系统中设置旁通阀或节流阀。
• If the engine backfires, the sudden pressure in the intake manifold forces the valve back .
  如果发动机回火，进气歧管骤增的压力就迫使阀门向后移动。
• A canister purge valve is opened periodically to vent the vapor back into induction system .
  收集器的清除阀周期性地开启，泄放蒸气使之返回进气系统。
• The large holes on the left and right represent the inlet and exhausting valve ports respectively .
  左右两侧的两个大孔，分别表示进气阀孔和排气阀孔。
• However, the diaphragm provides more force to break the choke valve loose if it gets stuck .
  不过，膜片提供的力更大，使风门一旦被卡住时，也能够打开。
• In a positive copy, relative tone or lightness/darkness valves are the same as in the original .
  在阳像拷贝中，相对色调或亮度暗度值，均与原稿一致。
• Now, when the engine is started, the hot exhaust gases are deflected by the closed heat-control valve .
  现在当发动机起动时，关闭的热控制阀引导热废气。