The purpose of the idle speed control logic is to control engine speed at closed throttle.
怠速转速控制逻辑是用于控制节气门关闭后的发动机转速。
As this occurs, valve springs pull the valve tightly closed against its opening, called the valve seat.
当这发生时，气门弹簧紧紧地关闭气门口，叫做气门座。
open, shut, close, lock, bolt the door
开、 关、 闭、 锁、 栓门
But like the inlet valve, the exhaust valve needs time to reach the full-open position, It also needs time to reach the full-closed position.
但是像进气门一样，排气门需要时间到达充分打开和关闭的位置。
The adjusting of screw prevents the throttle valve from moving to the fully closed position.
调节螺钉防止节气门运动到全关闭位置。
The position of the valves during the power stroke are both closed.
在作功冲程期间，气门的位置都是关闭的。
A spring on the valve stem tends to hold the valve on its seat (closed). The lower end of the spring rests against the cylinder head.
气门杆上的弹簧使气门保持在气门座上(关闭状态)。弹簧的下端抵在气缸盖上。
After fitting of the valve, the valve should be maintained in a closed position to prevent any contamination from entering the cylinder.
连接好阀门后，阀门应保持关闭位置，为防止任何污染进入气瓶。
"Shut off the electric power supply to heater, close cold water inlet, open a hot water faucet to allow air to enter the system and open the drain valve, which is threaded to receive a standard hose coupling."
首先关闭电源开关,关闭冷水进口阀门,打开热水水龙头让空气进入管道系统,并且打开排水阀。
landing door closed detection device
层站门关闭监察装置
the gatepost against which the gate closes.
门柱得以关闭的东西。
Its storm doors were tightly closed.
大门紧紧地关闭着。
secure with, or as if with, bars.
用或仿佛用门闩关闭。
The door was flung open [shut].
那扇门被猛然推开 [关闭] 。
So the exhaust valve opens before BDC and closes after TDC.
因此排气门在下止点之前打开，在上止点之后关闭。
Inflate the Therm-a-Rest mattress by mouth as hard as possible, then quickly close the valve.
用嘴吹气垫使之尽可能膨胀到最坚硬,然后立即关闭阀门.
Close the toner door. The toner cartridge engages when the door is closed.
关闭硒鼓盖门。盖门关闭后,硒鼓将锁定就位。
This means that the operating mechanism must be able to move sufficiently far enough away from the valve to allow the valves to be fully closed against its seat by the valve spring.
这意味着操作机构必须离阀门足够远以允许阀门通过气门弹簧使其完全关闭。