Other than that, they both do the same thing, and you will see both forms of variable expansion in the rest of this series.
除此之外，二者相同，将在本系列的余下部分看到变量扩展的两种形式。
If a variable contains whitespace, the double quotation marks keep the variable expansion intact as a single argument.
如果一个变量包含空格，双引号会按原样把变量展开为一个参数。
Always be careful with shell expansion and variable names.
始终要谨慎使用Shell扩展和变量名称。
Fortunately for us, this is OK because variable expansion only happens when user_compile is executed.
对我们来说幸运的是，这没有问题，因为变量扩展只在执行user_compile时才发生。
When we need more punch, we can take advantage of bash's advanced built-in variable expansion functionality.
当需要更强的说服力时，可以利用bash内置的变量扩展功能。
We can use another form of variable expansion to select a specific substring, based on a specific character offset and length. Try typing in the following lines under bash.
可以根据特定字符偏移和长度，使用另一种形式的变量扩展，来选择特定子字符串。
You will notice that on a US keyboard, shift-4 is "$", which is the bash variable expansion character.
注意到了吗：在美国键盘上，shift-4是 "$"，它是bash变量扩展字符。
In bash terminology, this is called "variable expansion". But, what if we try the following.
这在bash术语中叫做“变量扩展”。
The firm quickly churned through several management teams, none of which overcame problems such as variable quality that had resulted from Callaway's rapid expansion.
公司迅速进入动荡之中，相继几届管理团队先后治理，但是他们无一能够解决由于公司的迅速扩张而带来的诸如产品质量问题。
But it is easy to aging in the air, the heat variable viscosity, easy expansion in mineral oil or gasoline and dissolved, but not resistant to acid alkali.
但在空气中易老化，遇热变黏，在矿物油或汽油中易膨胀和溶解，耐碱但不耐强酸。
Water has a variable coefficient of expansion.
水的膨胀系数是可变的。
Offering rich variable data of urban expansion, the earth observation technology of remote sensing becomes the main approach to monitor urban expansion.
遥感对地观测技术可以提供丰富的城市扩展变化数据，成为城市扩展监测的主要手段。
Experiments show that our theoretical predicts match experiment results well and the variable regularity of expansion satisfies the requirements of micro-driver.
实验结果表明，理论预测和实验结果能够基本吻合，而光热膨胀的波形也满足了实现微型驱动器的要求。
The error of expansion model and the method of getting scheduling variable were proposed.
分析了平衡流形展开模型的误差，给出了调度变量的确定方法。
If the variable is not in quotes, it performs word splitting and wildcard expansion on the result.
如果变量不加引号，它执行分词和通配符扩展的结果。
However, as each entry in the determinant is symbolic, that is, a polynomial in variable(s), this leads to the intermediate expression swell(or explosion) problem in the expansion of determinant.
但是，由于行列式中的元素通常是符号化的，即其中每个元素都是关于变元（或参数）的多项式，导致行列式展开时的中间计算过程膨胀（甚至爆炸）。
Finally, does some simulation studies to the fuzzy controller with variable region that designs for electronic expansion valve, and compared with ordinary fuzzy controller.
最后，对控制电子膨胀阀开度而设计的变论域模糊控制器进行了仿真研究，并且与普通模糊控制器的控制效果进行了比较。
The action taken by the assembler when it replaces a variable symbol with a value , for example , during the expansion of a macro definition.
汇编程序采用的一种动作，例如在宏定义展开时，它用一个值来代替一个变量符号。
The term numbers of free energy expansion are studied during the phase transition process when the order parameter is more than one variable.
本文讨论了序参量是多变数情况下相变过程中自由能展开式应保留的项数。
The term numbers of free energy expansion are studied during the phase transition process when the order parameter is more than one variable.
本文讨论了序参量是多变数情况下相变过程中自由能展开式应保留的项数。
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