Grid parity is understood as that line, that threshold, below which renewable electricity is cheaper than electricity from burning fossil fuels.

网格奇偶校验被理解为，个阈值，低于这个标准，再生能源发电比化石燃料发电便宜。

The reason this works is related to a concept called parity.

这样做的原因与称为奇偶校验的概念有关。

As the name suggests, it does this by checking the sum of the data.

正如名称所暗示的，它是通过检查数据的校验和来完成这工作的。

UDP headers also include something called a checksum, which allows the data to be verified for correctness.

用户数据报协议头也包含个称为校验和的东西，以用来验证数据的正确性。

For example, let's say we do a parity check on just these 8 bits, all the odd-numbered positions.

例如，假设我们对这8个比特进行奇偶校验，所有奇数位置的比特。

In our example, this adds up to a checksum of 364.

在我们的示例中，这加起来得到个校验和为364。

Within this system, we handle business checks, limit control, fee calculation, state machine control, and event messaging logic.

该系统内，我们处理业务校验、限额控制、费用计算、状态机控制及事件消息逻辑。

And remember, each question requires giving up only a single bit to set the appropriate parity check.

并且记住，每个问题只需要放弃个单的比特来设置适当的奇偶校验。

In UDP, the checksum value is stored in 16 bits.

在用户数据报协议中，校验和值存储在16位中。

Other people say that, well, the fact that other people change the wrong information is a good check against error.

其他人则认为， 好吧，其他人纠正错误信息这事实本身就是个很好的校验机制。

If that sum is the same as the checksum sent in the header, all is well.

如果那个总和与头部发送的校验和相同，那就切正常。

Phrased differently, it's the parity of these two bits.

换句话说，这是这两个比特的奇偶校验。

Everything except for those 8 highlighted parity bits, can be whatever you want it to be, carrying whatever message or data you want.

除了那8个高亮的奇偶校验位外，其他位以是你想要的任何内容， 承载你想要的任何消息或数据。

What that means, is that each of those parity bits sits inside one and only one of the four parity groups.

这意味着每个奇偶校验位都位于四个奇偶校验组中的个且仅个组内。

So when we do our four parity checks, and we see that they're all even, it unambiguously means that there is no error.

所以当我们进行四个奇偶校验时，如果发现它们都是偶数， 那就明确表示没有错误。

So you'll get a sector that has a valid checksum for the database, but it's the wrong, now you need to daisy chain your checksums.

所以你会得到个对数据库具有有效校验和的扇区，但它是错误的， 现在你需要串联你的校验和。

And instead of being random, it would be carrying 11 data bits together with 5 parity bits.

而不是随机的，它会携带11个数据位加上5个奇偶校验位。

If we use it as a parity bit across the whole block, it lets us actually detect, even though we can't correct, 2-bit errors.

如果我们将其作为整个块的奇偶校验位，它实际上以让我们检测到双比特错误，尽管我们无法纠正它们。

Before the packet is sent, the transmitting computer calculates the checksum by adding all the data together: 89 plus 111 plus 33 and so on.

在数据包发送前，发送计算机通过将所有数据相加来计算校验和：89加上111再加上33等等。

As the number of parity bits grows one-by-one, the block size keeps doubling.

随着奇偶校验位的数量逐个增加，数据块的大小会不断翻倍。