throttle threshold的用法和樣例：
例句
- However, when the throttle is opened wide, the vacuum is lost and can no longer hold the diaphragm up.
然而節氣門開大時，真空就消失，並且不再向上吸住膜片。 - Enough air-found mixture can seep around the throttle value and through the idle system to maintain the dieseling.
圍繞在節氣門處有足夠的空氣燃料混合氣經怠速系統泄漏過來助長了熄不了火現象。
