All of these are normally closed valves, except for reducing valves, which are normally open.
所有这些都是正常关闭阀，除减少阀门，一般开。
Any combination of normally closed, normally open or universal valves may be grouped together.
任何结合在一起的常闭，常开或通用阀门可归纳。
Options include direct acting and diaphragm type operations in a Normally Open or Normally Closed version.
可选包括直接作用和隔膜式常开或常闭版本。
Limit switch, directly actuated, spring returned, normally open. Switch can be specified as open or closed.
限制开关，直接启动，弹簧复位，正常情况下为断路。可指定开关为断开或接通。
Valve types include Normally Open and Normally Closed valves, for use in fuel, hydraulic, or pneumatic applications.
阀门有常开和常闭两种，可用于燃油，液压或气动应用领域。
Normally Open pilot assisted valves operate on a similar principle but with opposite effects from the pressure variations.
常开阀运行试验的协助一项类似的原则，但与来自压力变化相反的效果。
The switches are available in several configurations, with 2 normally open contacts, or 1 normally open and 1 normally close contact.
开关可以有不同的结构，可以有两个断开接点也可以有1个断开接点和1个闭合接点。
The same set of system (double speed) is used for usual ventilation and smoke extraction in case of fire accident, so the air intake is set as normally open.
平时通风和火灾时排烟共用一套系统(双速)，故风口设置为常开型。
Means need 25a contactor, main contact are three normally open, auxiliary contact is one normally open, control coil voltage is DC 110v, order volume is 20 sets.
表示为25a接触器的主触头为三对常开，辅助触头为一对常开，控制线圈的电压为直流110v，订货数量为20台。
FS remote contact module with remote contact base, can be selected according to the actual needs of the terminal 1-2 (normally open) or 1-3 (normally closed contact).
触点模块附带遥信触点功能底座，可根据实际需要选用端子1-2（常开触点）或1-3（常闭触点）连接。
Normally Open: When the coil is energized, the pilot hole closed, the valve chamber and pressurized by the piston return spring throttle thrust, the electromagnetic valve is closed.
常开：当线圈通电时，先导孔关闭，阀上腔由活塞节流孔增压和复位弹簧的推力，电磁阀关闭。
Both integrated PNP switch outputs are freely programmable, allowing the user to adjust the limit value, hysteresis, and functionality type (normally closed or normally open) as needed.
这两种集成PNP开关输出可自由编程，允许用户调节限定值，滞后和功能型(常闭或常开)的需要。
The contact point is in a normally open state, namely, while the disc is closed, the contact point of the electric control device is closed, and in a power-on state, it sends out electric signals.
触点处于常开状态，即阀瓣关闭时，电控装置触点闭合，在通电状态下给出电信号。
Normally pandas begin to develop their distinctive black spots after two weeks, and open their eyes after two weeks to four weeks, Morris said.
莫里斯说，通常两周后熊猫开始长出它们特有的黑斑，二到四周后它们开始睁开眼睛。
Whilst you can normally find a take-out restaurant for almost any cuisine, the most popular are pizza (Italian), Indian and Chinese -and all you have to do is open the door, pay and eat!
通常外卖餐馆什么都有，最吃香的当属披萨饼(意式)，印度菜和中餐，你只要打开门、付个钱就可以大快朵颐了。
Swimming pools built during the 1970s would normally have open plan changing areas, but more recent ones have enclosed cubicles.
建于20世纪70年代的游泳池通常会采用公共的换洗区域，但新修的却是在封闭单间中换洗。
Use your mouse as you would normally, though remember that you don't need to double-click to open apps.
你可以如往常一样，正常使用鼠标，但记住无需双击打开应用。
My normally tightwad mother would open her purse with abandon when we were traveling, and I've never quite shaken the habit.
当我在旅行时打开钱包时，母亲的忠告就完全忘记，我的坏习惯又回来了。
Once it exceeds the time limit, the file cannot be used normally, directly to open or not open garbled.
一旦超过限定次数，该文件无法正常使用，直接表现为打开即乱码或无法打开。
Once it exceeds the time limit, the file cannot be used normally, directly to open or not open garbled.
一旦超过限定时间，该文件无法正常使用，直接表现为打开即乱码或无法打开。
When the system is running normally, the developers and administrators could use the second panel to point to industry-wide open source Ajax libraries.
当系统正常运行时，开发人员和管理员可以使用这个第二个面板来指向行业范围的开源ajax库。
Proximity limit switch, directly actuated, spring returned, normally closed. Switch can be specified as open or closed.
直接启动、弹簧复位、正常闭合的邻近限制开关。可指定开关为断开或闭合。
Proximity limit switch, directly actuated, spring returned, normally closed. Right-click for closed or held open.
直接启动、弹簧复位、正常闭合的邻近限制开关。右击接通或保持断开。
Even a normally hard-working city like São Paulo, where supermarkets open at 7.00am and heavy traffic is a way of life, came to a standstill for Brazil’s matches.
即使像圣保罗一样平常勤奋工作的城市，超市从早上七点营业和交通拥挤已经司空见惯，照样因为巴西足球队出赛而停顿下来。
Limit switch, directly actuated, spring returned, normally closed. Switch can be specified as open or closed.
直接启动、弹簧复位、正常闭合的限制开关。可指定开关为断开或闭合。
Next, open up a command line terminal and type cd followed by a space and the destination directory of the file you've just downloaded (this is normally going to be ~/Desktop for your desktop.
接着，打开一个命令行终端，键入cd+空格+你下载的文件的路径（通常是你主文件夹中的~/Desktop）。
Limit switch, directly actuated, spring returned, normally closed. Right-click for closed or held open.
限制开关，直接启动，弹簧复位，正常情况下为闭合。右击接通或保持断开。
Normally the Eustachian tube is closed, so in order to equalize the pressure we need to open it.
通常情况下耳咽管都是关闭的，但当我们需要平衡气压时我们需要打开它。
Normally, when you open a Save dialog, you need to navigate to the folder that you want to use, which can often be annoying.
通常，当您打开一个保存对话框，你需要浏览到该文件夹中您要使用的，往往可以恼人的。
Normally, when you open a Save dialog, you need to navigate to the folder that you want to use, which can often be annoying.
通常，当您打开一个保存对话框，你需要浏览到该文件夹中您要使用的，往往可以恼人的。
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