There is one change of variable problem on each of the two practice exams to give you a feeling for what's realistic.
两次练习测验中,都有一道题是关于变量替换的,感觉这是很重要的那样。
According to the property of mixed-discrete variable problem, an adjacent producing function states is proposed, and a suitable annealing schedule to this optimzation is given.
文中根据混合离散变量的特点，提出了几种邻域状态的产生函数和迭代方案，给出了适宜的模拟退火过程的冷却进度表。
With the diet problem, you saw how to formulate a simple, multi-variable problem, how to declare bidimensional parameters in GNU MathProg, and how to interpret the results of a minimization problem.
在日常饮食问题中，我们看到了如何对一个简单的多变量问题进行建模，如何在GNUMathProg中声明二维参数，以及如何解释最小化问题的结果。
The chief problem in coping with foreign motorists is not so much remembering that they are different from yourself, but that they are enormously variable.
对付外国司机的主要问题不是要记住他们和你不同，而是要记住他们是千差万别的。
Messages have variable data for each instance or occurrence of the element to identify the precise resource and other data required to fix the problem.
消息具有用于元素的每个实例或每次出现的变量数据，以标识修复问题所需的精确资源和其他数据。
That means if you were able to solve and eliminate the variable that would be a critical point. When you have the same problem, as we have critical points, are they maxima or minima?
也就是说，如果你可以解出来或者去除掉这些变量的点，就是临界点，当你有这样的问题要解决的时候，我们找到临界点了，它们一定是最大值点或者最小值点吗？
A general solution for the problem above is to have each user thread hold a locale variable by passing the variable to the user thread during its construction.
对于以上问题通用的解决方法，是通过在构造变量期间将其传递给用户线程，来让每一个用户都有一个场所变量。
You may be wondering, in a problem with many more decision variables and constraints, would you have to declare each variable and each constraint separately?
我们可能会纳闷，在有更多决策变量和约束的问题中，我们只能分别逐一声明每个变量和每个约束吗？
To solve this problem, create a separate class for each variable you need to save, naming the class as the variable name you need to reference in subsequent tests.
为了解决这个问题，为您需要保存的每一个变量创建一个单独的类，给类命的名要参考在随后的测试中您需要应用的变量名。
The second case, the conditional modification of a variable, is a subset of the variable reuse problem except that sometimes we will keep our existing value and sometimes we will want a new value.
第二种情形，即变量的条件修改，是重新使用的问题的一个子集，只是有时我们会保持现有的值，有时需要使用一个新值。
To prevent this problem, the best solution is to create two separate variables and just derive the second from the first the same way you would do so if you were just writing to the same variable.
为了预防这一问题，最好的解决方案是创建两个单独的变量，并以同样的方法根据第一个变量得出第二个变量，就像是写入同一变量那样。
The problem here is not that a particular rate of inflation would be breached; it is the simple fact that inflation is considered a variable to be messed with in the first place.
这里的问题不在于会突破某个特定的通胀率，而是一个简单的事实：通胀率一开始就被视为一种可以任意摆弄的变量。
Some stars being watched have very variable brightness. That is confusing for computers, but for human eyes is less of a problem.
一些观测中的恒星亮度变化较大，这对于计算机来说难以把握，但是对于人眼却不成问题。
But doesn't this have the same problem of variable naming that the original one had?
但是它是否也有原来的变量名问题呢？
Some processors allow you to get around this problem by setting the doctype with a variable.
某些处理程序允许通过变量设置doctype来绕过这个问题。
To resolve the problem, I refactored my connector so that it would no longer rely on a BrowseService object stored in an instance variable.
为了解决这个问题，我重构了连接器，使其不再依赖存储在实例变量中的BrowseService对象。
If there were any errors, we send the form back to the user with the errors in a template variable so that they can be used to highlight the problem.
如果有任何错误，我们都会将表单返回给用户，同时还有用来突出问题的模板变量中的错误。
The function returns a specific value (or range of values) to indicate an error, and the global variable errno is set to indicate the cause of the problem.
函数返回特定值(或值范围)以指明错误，且设置全局变量errno以指明问题的起因。
As its action, the form would have a PHP script that runs your rsync script via passthru with a return option variable so you know if a problem occurs, as shown below.
在这个过程中，该表单应该有一个php脚本，它使用返回选项变量通过passthru运行rsync脚本，这样您就知道是否发生问题，如下所示。
You can solve this problem using the TCSH autologout variable.
可以用tcshautologout变量解决这个问题。
The opendir() and readdir() functions both return NULL if a problem occurs and the errno global variable is set to indicate what went wrong.
在出现问题时，opendir()和readdir()函数都会返回NULL，并且将设置全局变量 errno 的值，以指出所出现的错误。
The only real problem is alpha-transparency in true color PNGs, but then again, GIFs are not true color and don't support variable transparency either.
只有真正的问题是alpha 透明度在真彩色PNG，但又中 GIF不是真彩色，也不支持可变的透明度。
The problem with this line of code is that the variable instance can become non-null before the body of the Singleton constructor executes.
这行代码的问题是：在Singleton构造函数体执行之前，变量instance可能成为非null的。
For example, if a there is a problem with a process due to incorrect data, you can now make updates to correct the problem. To update a variable.
例如，如果某个流程由于数据不正确而存在问题，您现在可以做出更新以纠正问题。
Most of the commands referenced in this article are not in a user's typical PATH environment variable. There are two easy solutions to this minor problem.
本文提到的大多数命令都未出现在用户的典型PATH环境变量中。
Remember that this analysis used a simple two-variable maximization problem.
记住这个分析使用了一个简单的两变量最大化问题。
The American insurance industry has tried to get around this problem by offering variable annuities, which they like to call a "living benefit".
美国保险行业试图通过提供各种各样的年金来绕过这一问题，他们把这些年金称作“生活保障金”。
A problem in which the Text Wizard allowed invalid characters in variable names was fixed.
一个问题在该文本向导允许无效字符变量名称是固定的。
Computer simulation shows that the control of fuzzy variable structure can increase the robustness, solve the problem of shiver at high frequency, and improve the stability of small disturbance.
计算机仿真结果表明，采用模糊变结构附加励磁控制方法可以提高鲁棒性、解决高频抖动问题，并能够很好地改善电力系统的小干扰稳定性。
Computer simulation shows that the control of fuzzy variable structure can increase the robustness, solve the problem of shiver at high frequency, and improve the stability of small disturbance.
计算机仿真结果表明，采用模糊变结构附加励磁控制方法可以提高鲁棒性、解决高频抖动问题，并能够很好地改善电力系统的小干扰稳定性。
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