opening and closing speed

基本解释

Overwhelmingly, people are talking about the new iPhone's lightning fast speed, especially when opening and closing applications and browsing the net.
人们普遍叫好的一点就是这款新手机的速度，尤其是在开启/关闭软件和浏览网页时的速度非常快。
A system of weather sensors on the outside of the building monitors the temperature, wind speed and level of sunlight, closing blinds and opening windows panels as necessary.
位于建筑外部的天气传感器系统检测温度、风速和光照强度，必要时关闭窗帘或开启窗户。
Output speed of electric installations on the determination of its opening and closing the valve when the time is not strictly required, should try to use a slower speed.
关于对电动装置输出转速的确定，在阀门对其启闭时间没有严格要求时，应尽量选用较慢的速度。
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