In pipeline systems, non-return valves are important valves, of which swing non-return valves are most widely used.
在管道输送系统中，止回阀是重要的阀门之一，其中，旋启止回阀最为常用。
All engines have built-on non-return valves and flame arresters.
所有柴油机都安装有止回阀和防火焰装置。
The transfer line should be equipped with a non-return valve or other suitable alternative.
转移管线上须配备止回阀之类的装置。
Pattern conversion is the key technology for all-optical clock recovery from non-return-to-zero (NRZ) signal.
码型转换是实现非归零(NRZ)信号全光时钟恢复的关键技术。
The MZM is driven by a non-return-to-zero (NRZ) data sequence and biased at the nonlinear point to generate edge-triggered pulses.
利用双输出口调制器典型的互补输出特性，通过偏置调制器于非线性传输点，可得到一对由NRZ序列边沿触发的明暗脉冲。
Method 1: Change into a new non-return valve; prolong the holding time, if there is still no melt cushion, it means the cylinder is broken.
方法一：换上新的止回阀，延长保压时间依然没有料垫，则说明料筒损坏。
Fixed firefighting systems - Components for gas extinguishing systems - Part 13: requirements and test methods for check valves and non-return valves.
固定消防系统。气体灭火系统用元件。第13部分：止回阀要求和试验方法。
Utilizing phase modulator and dispersion compensation fiber (DCF) link, a non-return-zero (NRZ) data format is converted to return-zero (RZ) data format with tunable duty ratio.
提出了利用相位调制器和色散补偿光纤(DCF)把非归零(NRZ)码信号转换成为占空比可调的归零(RZ)码信号的方案。
A format conversion from a non-return-to-zero (NRZ) signal to return-to-zero (RZ) signal is presented based on four-wave mixing (FWM) and cross-phase modulation (XPM) in a silicon optical waveguide.
基于硅光波导的四波混频(FWM)和交叉相位调制(XPM)效应，提出非归零码(NRZ)到归零码(RZ)的光调制格式转换。
You'll want to be sure to always return null if no match occurs, so that entity resolution will occur normally in non-special cases.
当不匹配时，您会希望始终确保返回null ，这样实体解析在非特殊情况下都可以正常进行。
Non-recursive queries allow the server to return a partial response, such as returning the name or address of the server that may know the answer (or may have more information).
非递归查询允许服务器返回部分响应，例如返回可能知道答案(或可能具有更多信息)的服务器的名称或地址。
The lock function must immediately check and return (non-blocking).
lock函数必须立即进行检查并返回(非阻塞方式)。
It can be used in the WHERE clause of an SQL statement to select only the rows that return non-trivial XML values for the XPath expression.
可以在sql语句的where子句中使用它只选择那些对于XPath表达式返回非空xml值的行。
This call is also non-blocking, which means that getnb can return null.
此调用也是非阻塞的，这意味着getnb可以返回null。
If we had added a getValue method to class Leaf, we would either have to return some sort of flag value indicating that the method application is non-sensical or actually throw an exception.
如果我们已经向Leaf类添加了getValue方法，我们要么是不得不返回一些类型的标志值表明此方法应用是无意义的，要么是实际抛出一个异常。
The non-data descriptor is likely to be used to return a callable object.
非数据描述符最常用于返回一个可调用对象。
As with the standard library, there can be many library functions that return values in fixed objects, always reusing the same objects, which causes the functions to be non-reentrant.
对标准程序库而言，有很多程序库函数在固定的对象中返回值，总是重复使用同一对象，这就使得那些函数不可重入。
If the method on the server-side component has a non-void return value, that value is passed into the callback function as its only argument.
如果服务器端组件上的方法具有非空返回值，该值就会作为其惟一的实参传递进此回调函数。
The return value is zero for a successful parse, and non-zero otherwise.
返回值为零，说明是一次成功的解析，否则返回的是非零值。
But their average return on equity was less than 8.2%, whereas that of larger non-state industrial enterprises was 12.9%.
但其平均净资产回报率还不到8.2%，而大型非国有工业企业的平均净资产回报率是12.9%。
The two kinds of queries that are supported are: event solution queries, which return only events and the answer solution queries, which can return any non-event data or aggregated results.
支持两种类型的查询：事件解决方案查询（它们只返回事件）和回答解决方案查询（它们可以返回任何非事件数据或聚合的结果）。
On a non-blocking connection, a return of 0 means no data was available, and -1 indicates an error.
在非阻塞连接的情况下，返回0表示没有可以获得的数据，返回-1 表示连接出错。
The procedure can return null or non-null values.
该过程可以返回null或非null值。
SCA does not define a mechanism for making non-blocking calls to methods that return values or are declared to throw exceptions.
SCA并不定义对返回值或声明要引发异常的方法的非阻塞调用的机制。
Caveat: The function only accepts Unicode strings, and will return an error if non-Unicode strings are passed in.
注意：函数只接受Unicode编码的字符串。当传进非unicode字符串时它会返回一个错误。
It is pointed out that credit risk? Operational risk and non-symmetry between risk and return are the main risks in commercial accepted bills and discounting business.
指出信用风险，操作风险及风险回报不对称是商业汇票承兑，贴现业务中的主要风险。
It is pointed out that credit risk? Operational risk and non-symmetry between risk and return are the main risks in commercial accepted bills and discounting business.
指出信用风险，操作风险及风险回报不对称是商业汇票承兑，贴现业务中的主要风险。
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