There is no reason the air fare quotes service could not just accept simple positional parameters 飞机票价报价服务仅仅接受简单的定位参数是没有理由的。
This positional parameter specifies the program elements that the indicated attribute can be placed on 该定位参数指定可在其上放置所指示的属性( attribute )的程序元素。
Providers support only positional parameters identified by the " ? " character , as shown in the following example 提供程序只支持由“ ? ”字符标识的定位参数，如以下示例所示：
All positional arguments for an attribute must precede any variable or property initializers 属性( attribute )的所有定位参数必须位于任何变量或属性( property )初始值设定项之前。
Later , the relationship between front wheel alignment parameters and tire wear is analysed by studying the tire model 然后从轮胎模型入手分析前轮定位参数同轮胎磨损的关系。
A required , positional parameter that specifies the . jar , . zip or . ear file that contains the application to be deployed 一个必需的定位参数，它指定包含要部署的应用程序的. jar 、 . zip或
Positional arguments are arguments that are specified in the order they are declared for the constructor of an attribute 定位参数是按其在为某一属性的构造函数声明的顺序而指定的参数。
Each public constructor for an attribute class defines a valid sequence of positional parameters for that class 属性( attribute )类的每个公共构造函数为该类定义一个有效的定位参数序列。
Provide a read - only property with the same name as each positional argument , but change the case to differentiate between them 提供与每个定位参数同名的只读属性，但更改大小写以将它们区分开。
An attribute name , a possibly overloaded list of required positional parameters , and a list of optional named arguments ） 、属性名称、必需的定位参数的列表（可能会重载）和可选命名参数的列表组成。
