下面的表达式指定按层次结构向上转换。
The following expression specifies a conversion up the hierarchy.
继承一个基类而无法将它向下或向上转换到基类的理念是不明智的。
The idea of inheriting from a base class without being able to downcast to it or upcast to the base just seemed silly.
当您向某个对象类型上的方法传递参数时，将自动应用向上转换。
Upcasting is applied automatically when you pass arguments to methods on an object type.
在使用向上转换运算符时，编译器会尝试根据上下文来推断出要转换为的类型。
When you use the upcast operator, the compiler attempts to infer the type you are converting to from the context.
对于向上转换运算符，如果编译器无法根据上下文推断出特定的目标类型，则将报告错误。
As for the upcast operator, if the compiler cannot infer a specific target type from the context, it reports an error.
我们将讨论迁移前的清理（如全球编辑或HTMLTidy）、使用XSLT 迁移脚本/转换进行向上转换、迁移后验证和修饰。
We will explore premigration cleanup (such as global edits or HTML Tidy), up-translation using XSLT migration scripts/transforms, and post-migration validation and touch-ups.
请使用黄色向上箭头返回顶级转换。
Use the yellow up arrow to return to the top-level transformation.
每次当你看到游泳者向上跳起，又向下跃入水中时，你就会感到，他要把很陡的斜角动能，转换成水平的初速度，将是多么困难。
Every once while you see a swimmer take it up and then in, it is really hard to transfer that momentum from a steep angle entry to a horizontal speed.
雷达转换至真运动北向上。
数据绑定使xml树和对象树(或者有时候是对象图，带有向上或跨整个树结构的链接)相互转换。
Data binding converts these XML trees to and from trees of objects (or sometimes graphs of objects, with links up or across the tree structure).
雷达转换至真运动航向向上。
在一些走滑断层产生于聚敛地壳内或处于转换挤压作用下的地区内，岩石向上断裂成一种正向花状构造。
In areas where strike-slip faults occur in converging crust, or transpression, rocks are faulted upward in a positive flower structure.
雷达转换至相对运动北向上。
雷达转换至相对运动船首向上。
将一维的表面肌电信号转换为二维的散点图，在这二维的平面空间中研究散点在一周360度的各个方向上的分布情况，提出了象限信息熵的概念。
Converte the one dimension time series into two dimension spot figure, then study the distribution of the spot around the 360 degree directions, compute the quadrant information entropy.
要点就是吸收向下的动力，并尽可能迅速平稳地将这个力量转换成向上的动力。
The key is absorbing the downward motion and reversing the force into an upward motion as rapidly and smoothly as possible.
发光器在远离光源的方向上通过光转换元件发射第一颜色的可见光。
The light emitter emits visible light of a first color through the light conversion element in a direction away from the light source.
和与穿刺机构接合的第二端，其中，联接臂构造为将第一方向上的发射力转换成第二方向上的穿刺力；
The linkage arm is pivotably attached to the housing and has first and second ends engaged to the firing and lancing mechanisms, respectively.
和与穿刺机构接合的第二端，其中，联接臂构造为将第一方向上的发射力转换成第二方向上的穿刺力；
The linkage arm is pivotably attached to the housing and has first and second ends engaged to the firing and lancing mechanisms, respectively.
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