我获得了杠杆定律的表达式。

I derived an expression for the lever rule.

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好，现在我们有能量的表达式。

Well, now we have an expression for the energy.

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但是布尔表达式实际上测试什么？

But what does the Boolean expression actually test for?

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对于这种表达式是没有简单的公式。

There is no simple formula for this kind of thing.

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那么，例如，这里有个表达式。

So, for example, there's an expression.

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在这种情况下，该表达式语法有效。

In this case, the expression syntax is valid.

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对不对？这个表达式的值是多少？

All right? What's the value of that expression?

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单击ok以关闭表达式编辑器。

Click OK to close the expression editor.

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能量和概率，由这个表达式给出。

And that energy, that probability, is given by this expression.

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你能用表达式树做些什么呢？

What can you do with expression trees?

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这将出现一个表达式编辑器。

An expression editor should come up.

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遍历表达式的第三部分是布尔表达式。

The third part of the traversal expression is a Boolean expression.

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正则表达式参数是路由机制。

The regular expression argument is the routing mechanism.

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再次单击可将表达式收缩。

Click there again to contract this expression.

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您刚刚遇到了表达式问题。

You have just met the Expression Problem.

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它的表达式不是那么简单。

The expression for it isn't so simple.

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我们可以简化成如下表达式

We can shorten it to the following expression.

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第4步：评估正则表达式。

Step 4: Evaluate the regular expression.

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表达式的重要元素是变量。

One important element of expressions is the variable.

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表达式\1,\2,...

The expressions \1, \2, ….

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你认为我对表达式求值的话,会发生什么？

What do you think should happen if I evaluate that expression?

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从左到右读入后缀表达式

Read the postfix expression from left to right.

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甚至可以替换JEXL表达式解释器。

You can even replace the JEXL expression interpreter.

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它被当作参数化表达式。

It is treated as the parameterized expression.

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该表达式的限制更宽松。

This expression is more inclusive.

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这是功和热量的表达式。

So here are expressions for work and heat.

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代入这个表达式的这里。

I can substitute dq from this expression in here.

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我们有它们的表达式。

We have expressions for that.

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表达式就是一个表达式。

Expression is... well... an expression.

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其主体是一个表达式。

Its body is an expression.

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