The system's frequency stability and target's Doppler effect, which mainly influence high range resolution technique, were also analyzed. The first null velocity was calculated.
对影响该高距离分辨率技术的系统频率稳定度和目标多普勒响应进行了分析，计算出目标第一零值点速度。
The unit test methods first verify that the object provided is not null, and then perform one or more very basic actions on the object.
单元测试方法首先验证所提供的对象不是空的，然后对该对象执行一个或多个非常基础的操作。
If no value or NULL is specified for this argument, it will first look for explain tables under current authorization ID then under the SYSTOOLS schema.
如果这个参数没有指定值或者指定为NULL，那么它首先会查找当前授权ID下的解释表，然后再在SYSTOOLS模式下查找。
If no value or NULL is specified for this argument, it will first look for explain tables under current authorization ID, then under SYSTOOLS schema.
如果这个参数不指定值或者指定为NULL，那么它首先会查找当前授权ID下的解释表，然后再在SYSTOOLS模式下查找。
The first approach to consider is what we might think of as the "zero case" (or "null hypothesis" to borrow from science, or "first principles" from philosophy) of XML document modification.
第一种可以考虑的方法是对XML文档修改使用“零案例”(或者从科学上说，是“空假设”，从哲学上说，是“第一法则”)。
In Oracle 10g, if there is a BEFORE INSERT TRIGGER and a NOT NULL constraint on a table, then the BEFORE TRIGGER is executed first, and then the constraint check is performed.
在Oracle10g中，如果表上同时存在BEFORE INSERT触发器和NOT NULL约束，那么先执行BEFORE触发器，然后执行约束检查。
Domain names are the first part of the MBean identifier — the comma-delimited list of name/value pairs fully qualifies the name. Calling server.queryNames(null
域名是MBean标识符的第一部分 —用逗号分隔的名 /值对列表完全限定名称。
The first key is 21 bytes long (the byte length is shown in parentheses [()]) and is called GLOBALS/c_setprinter followed by a NULL, which is ASCII zero.
第一个键为21字节（字节长度显示在括号中 [()]），被称为GLOBALS/c_setprinter，后跟NULL，其为ASCII 码零。
The capability is checked against null in the first part of the if clause.
功能是根据 if 语句的第一部分获得的。
If the method returns null, it means this is the first time through, so the servlet needs to retrieve the list from the database.
如果方法返回空，意味着这是第一次访问，所以servlet需要从数据库检索列表。
The first one asserts that the calculator instance object is not null, i.e. it exists.
第一个宣称这个计数器实例对象不是空，就像它实际存在一样。
Within this routine, first a check for non-null context handle is made.
在这个例程中，首先检查是否有非空的上下文句柄。
The first bug pattern relating to null-pointer exceptions that we'll explore is one that I call the Dangling Composite pattern.
我们将探讨的第一个关于空指针异常的错误类型，是一个我称之为悬挂复合类型的错误类型。
An error could occur in the first test and prevent the variable's value from being set, thus resulting in the other tests receiving a null value.
错误可以发生在首个测试期间，并阻止您去设置变量的值，并导致其他的测试接受一个空值。
For example, if a before trigger supplies value to a NOT NULL column, then the before trigger is executed first and a value is supplied to the column so that the NOT NULL constraint isn't violated.
例如，如果一个BEFORE触发器给一个NOTnull列提供值，那么先执行BEFORE触发器，给列提供值，所以不会违反NOT NULL约束。
The code in listing 11 first checks if the response passed is null, and, if not, then checks if the required fields are null.
清单11中的代码首先检查传递的响应是否为null，如果不是，则检查所需字段是否为null。
When creating a new component, it's important to see if it's the first component (if rootComponent is null).
在创建新组件时，需要了解它是否是第一个组件（如果rootComponent为空）。
It's a good idea to try to get config service first, then call createConfigService()when its return value is null.
先获取配置服务，然后在其返回值为空（null）时再调用createConfigService() 是个不错的主意。
Listing 3 initializes a new Zend_Soap_Server object in non-WSDL mode, passing a null value as the first argument to the object constructor.
清单3传递一个null值到对象构造函数的第一个参数，以非wsdl模式初始化了一个新的Zend_Soap_Server对象。
For items that have two paths to send, there is a null byte after the first path, and it is followed by the second path, with the pathlen field of the message being set to the total length.
对于有两个路径需要发送的项，那么在第一个路径之后有一个null字节，其后紧跟第二个路径，并且消息的pathlen字段被设置为总长度。
The first parameter to session.getDatabase is the name of a server where null means the local system.
getDatabase 的第一个参数是服务器名称，其中null意味着是本地系统。
This test-the-null-hypothesis-first logic applies at multiple stages in the analysis of poll data.
这个“先检验虚假设”逻辑在民意测验数据分析中的多个阶段都适用。
The first two lines of assembly code at B0 and B5 load the instance reference from memory location 049388C8 into eax and test for null.
B0和B5 处的前两行汇编代码将 instance引用从内存位置 049388C8 加载至eax 中，并进行 null 检查。
We could add validation code to the register method to determine whether the first-name field is blank or null.
我们可以在register方法中添加验证代码，以确定名字字段是否为null。
The third TAB in the Twitter panel, following, first checks whether the following object is not null.
Twitter面板内的第三个选项卡是following，它先是检查following对象是否为null。
First, the actual occurrence of a specific value may indicate whether there are issues such as incomplete data by the presence of a Null value, a Space, and so on.
首先，一个特定值的实际出现可能表明是否存在问题，例如由于null值、空格等造成的不完整的值。
The first time this method is called, instance is null and the code proceeds to B9.
第一次调用此方法时，instance为null，代码执行到B9。
If a call came in as the service was being replaced, and the unset was called first, there would be a chance that the shorten service could be null transiently.
如果替换服务时先调用unset,shorten服务就有可能短暂为null。
If a call came in as the service was being replaced, and the unset was called first, there would be a chance that the shorten service could be null transiently.
如果替换服务时先调用unset,shorten服务就有可能短暂为null。
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