专业英语翻译 高分救助

发布网友 发布时间：2022-04-23 08:53

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热心网友 时间：2022-06-18 15:57

As was mentined earlier, the term distortion signifes a change in the original shape of body. A more precise defintion of ditortin, however, is needed, and for this purpose, the change in angle between two initially perpendicular line elements is considered. 正如前面提到的那样，形变象征这物体原有形状的改变。对于形变，需要更精确的定义，为此我们考虑了两个初始垂直的线元之间的夹角。The change in the 90` angle between two line elements nn and tt, as shown in Fig. 2.3(c), represents a distortion and is given the name shear strain and denoted by the symbol **. 两个线元（nn和tt）之间的90度夹角的变化，如图2.3（c）所示的，表示了一种形变，并赋予它名称--剪切应变，用符号**表示。Note that two subscripts are assigned to the shear strain, **, one for each if the two line elements being considered. 需要注意，两个下标被指定为剪切应变**,如果考虑两个线元的话，每一个用于一个线元。If after distortion, line tt in Fig. 2.3(c) rotates to a new position t`t` while line nn rermains fixed, the shear strain betwwen line nn and line tt (proceeding from nn to tt in a ccw manner ) is ** and represents a decrease in the 90` angle. 如果在变形后，在图2.3(c)中的线元tt旋转到新的位置t’t’，而线元nn仍保持固定，那么线元nn和tt之间的剪切应变（从nn到tt以逆时针方式进行）就是**,并代表90度角的减小。On the other hand, the shear strain between line nn and line tt (proceeding from tt to nn in a ccw manner ) is ** and represents an increase in the 90` angle. 另一方面，线元nn和tt之间的剪切应变（从tt到nn以逆时针方式进行）就是**, 并代表90度角的增加。This concept gives rise to a sign convention for shear strains. 这一概念引起了剪切应变符号的转换。For the sake of consistency with the equations developed earlier for plane stress, the sign convention adopted in this text is such that a positive shear strain represents an increse in the 90 angle, while a negative shear strain represents a decrease. 为了与最开始为平面应力列出的方程的一致性起见，本文中采用的符号转换是这样的，即正的剪切应变表示90度角的增加，而负的剪切应变表示90度角的减小。In Fig.2.3(c), for example, ** is negative and ** is postitive. Note that as in the case of the normal strain, ** , the shear strain ** is also a dimensionless quantity since it represents a radian measure.例如在图2.3（c）中，例如，**是负的，而**是正的。请注意，就如正常应变**的情况一样, 剪切应变**也是无量纲的量，因为它表示一个弧度的量度。

热心网友 时间：2022-06-18 15:58

As was mentioned earlier, the term distortion signifies a change in the original shape of body. A more precise definition of distortion, however, is needed, and for this purpose, the change in angle between two initially perpendicular line elements is considered.

如前所述，(扭曲)变形这个术语指的是一个物体在原始形状上的改变。但我们需要更精确的定义，为此，两个初始相互垂直的线元之间的夹角变化也要加以考虑。

The change in the 90` angle between two line elements nn and tt, as shown in Fig. 2.3(c), represents a distortion and is given the name shear strain and denoted by the symbol **.

如图2.3（c）所示的，两个线元nn和tt之间的90`夹角的变化就表示了发生了变形，其名称为剪切应变，并用符号**表示。

Note that two subscripts are assigned to the shear strain, **, one for each if the two line elements being considered.

请注意，两个下标指定为剪切应变**,如果考虑两个线元的话，每个下标各对应于一个线元。

If after distortion, line tt in Fig. 2.3(c) rotates to a new position t`t` while line nn remains fixed, the shear strain between line nn and line tt (proceeding from nn to tt in a ccw manner) is ** and represents a decrease in the 90` angle.

如果在变形后，Fig. 2.3(c)中的线元tt旋转到新的位置t`t`，而线元nn仍保持固定，那么线元nn和tt之间的剪切应变（从nn到tt以逆时针方式进行）就是**，并代表着90`角的减小。

On the other hand, the shear strain between line nn and line tt (proceeding from tt to nn in a ccw manner) is ** and represents an increase in the 90` angle.

反之，线元nn和tt之间的剪切应变（从tt到nn以逆时针方式进行）则为**, 并代表着90`角的增加。

This concept gives rise to a sign convention for shear strains.

这一概念需要对剪切应变进行符号约定。

For the sake of consistency with the equations developed earlier for plane stress, the sign convention adopted in this text is such that a positive shear strain represents an increase in the 90 angle, while a negative shear strain represents a decrease.

为了与前述平面应力推导所得的方程一致起见，本文中采用的符号约定是这样的，即正的剪切应变表示为90`角的增加，而负的剪切应变则表示为90`角的减小。

In Fig.2.3(c), for example, ** is negative and ** is positive. Note that as in the case of the normal strain, **, the shear strain ** is also a dimensionless quantity since it represents a radian measure.

以图2.3（c）为例，**是负的，而**是正的。请注意，就如正应变（法向应变）**的情形一样, 剪切应变**也是无量纲的量，因为它表示的是弧度。

热心网友 时间：2022-06-18 15:58

杜绝机译，请楼主审阅。

As was mentined earlier, the term distortion signifes a change in the original shape of body. A more precise defintion of ditortin, however, is needed, and for this purpose, the change in angle between two initially perpendicular line elements is considered. 正如前面提到的那样，形变这个术语象征这物体原有形状的改变。可是，形变需要更精确的定义，为此我们考虑了两个初始垂直的线元之间的夹角。The change in the 90` angle between two line elements nn and tt, as shown in Fig. 2.3(c), represents a distortion and is given the name shear strain and denoted by the symbol **. 如图2.3（c）所示的、两个线元（nn和tt）之间的90度夹角的变化表示了某种形变，我们给它的名称是剪切应变，并用符号**表示。Note that two subscripts are assigned to the shear strain, **, one for each if the two line elements being considered. 请注意，两个下标指定为剪切应变**,如果考虑两个线元的话，个用于一个线元。If after distortion, line tt in Fig. 2.3(c) rotates to a new position t`t` while line nn rermains fixed, the shear strain betwwen line nn and line tt (proceeding from nn to tt in a ccw manner ) is ** and represents a decrease in the 90` angle. 如果在变形后，Fig. 2.3(c)中的线元tt旋转到新的位置t’t’，而线元nn仍保持固定，那么线元nn和tt之间的剪切应变（从nn到tt以逆时针方式进行）就是**,并代表90度角的减小。On the other hand, the shear strain between line nn and line tt (proceeding from tt to nn in a ccw manner ) is ** and represents an increase in the 90` angle. 另一方面，线元nn和tt之间的剪切应变（从tt到nn以逆时针方式进行）就是**, 并代表90度角的增加。This concept gives rise to a sign convention for shear strains. 这一概念引起了剪切应变符号的转换。For the sake of consistency with the equations developed earlier for plane stress, the sign convention adopted in this text is such that a positive shear strain represents an increse in the 90 angle, while a negative shear strain represents a decrease. 为了与前面为平面应力列出的方程一致起见，本文中采用的符号转换是这样的，即正的剪切应变表示90度角的增加，而负的剪切应变表示90度角的减小。In Fig.2.3(c), for example, ** is negative and ** is postitive. Note that as in the case of the normal strain, ** , the shear strain ** is also a dimensionless quantity since it represents a radian measure.例如在图2.3（c）中，**是负的，而**是正的。请注意，就如正常应变**的情况一样, 剪切应变**也是无量纲的量，因为它表示一个弧度的量度。

热心网友 时间：2022-06-18 15:59

正如提到这个之前，长期扭曲标志改变了原来的形状的机构。一个更精确的定义的失真 ，但是，是必要的，并为此目的，角度的变化，两国之间最初垂线内容是审议。的变化， 90 `角两线之间的内容网络和TT所示，图。 2.3 （ c ）项，
代表的歪曲和名称，给出的剪应变和命名的象征**.请注意，两个标分配给剪应变， **一个，每个如果两个分子正在审议中。如果后失真，线在图特。 3月2日（三）旋转到一个新的立场吨` `吨，而固定线路网络遗留的剪应变在线网络和线路特（从神经网络
特在特定常规武器公约的方式）之间是**和代表减少了90 `角。另一方面，剪应变之间的神经网络和线路线特（从特向神经网络的方式在特定常规武器公约）是**和代表增加了90 `角。这一概念引起了签署公约剪应变。为了符合方程发展较早的平面应力的
签署公约的通过在这一案文是这样一个积极的剪应变的一个增长90角，而负数剪应变代表着下降。在图2.3 （ c ）项，例如， **是消极的， **是绝对的 。请注意，在正常情况下的压力， ** ，在剪应变**也是一个无量纲量，因为它代表了弧度措施。

热心网友 时间：2022-06-18 15:59

1..拼写错误好多啊...几乎每行都有...
2..翻译机去死!!!
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就像之前说的..形变就意味着物体原有形状的变化...

然而..我们需要一个更加精确的对于形变的描述..因此..我们同时考虑在两个维度上的角度变化分量...

在直角坐标系(就是2维坐标系)中的两个分量nn和tt,如图2.3C,表示了一个形变..同时给出了剪切应变**...这两个量都被分别表示为在坐标轴方向上的两个分量...

如果在形变后..2.3C中的tt线旋转到了一个新的位置t't'而nn保持不变...nn和tt中的剪切应变(依据向量运算法则从nn到tt)就是**..它表示了在垂直方向上的减量(也有可能是表示在直角系中的减量..我看不到图..理解不清楚...)...

另一方面..nn和tt之间的剪切应变(从tt到nn)是**..它表示了在垂直方向上的增量...

这里提出了一个剪切应变的符号规则...

为了和之前推导的平面应力公式保持一致..这里约定用正号表示90度角中的增量而用负号表示90度角中的减量...

例如在2.3C中..**是负的而**是正的...

请注意在法向应变的情况中..法向应变**由于是用弧度描述的..仍然是一个无量纲的量...