避免在卷制锥筒时反复进行多次操作，降低了劳动强度，从而提高了生产率。

Consequently avoid repeat operation when we wind taper cylinder, decrease labor power and increase work efficiency.

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这种在服务工具上优化后的双滑套开关工具配置有效的减少了作业时间，同时也降低了多次操作活动工具所产生的风险。

The dual shifter configuration optimizes the operation by reducing rig time, while also reducing the risk associated with excessive tool manipulation.

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如果没有分帧机制，一端接收到的数据可能比另外一端发送的数据多或少(这会将一次写操作划分成多次操作，或者将多次写操作合并到一个读操作中)。

Without framing, a peer may receive more or less than was sent (splitting up a write or aggregating multiple writes into a single read).

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We saw some quadratic algorithms, typically those are things with multiple nested loops, or iterative or recursive calls, where you're doing, say, a linear amount of time but you're doing it a linear number of times and so it becomes quadratic, and you'll see other polynomial kinds of algorithms.

我们看过一些平方算法，他们一般进行了多次嵌套循环,或者递归迭代调用，对一个线性操作调用线性次,这样就变成平方次了,以后你们能看到,一些多项式算法。

麻省理工公开课 - 计算机科学及编程导论课程节选